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Finding the Fourth Proportional to 946.72, 1,420.05 and 234.34

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Solution

The fourth proportional to 946.72, 1,420.05 and 234.34 is: 351.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.72 : 1,420.05 = 234.34 : x
  2. Step 2: Convert to fraction form
    946.72/1,420.05 = 234.34/x
  3. Step 3: Cross multiply
    946.72x = 1,420.05 × 234.34
  4. Step 4: Simplify right side
    946.72x = 332,774.52
  5. Step 5: Solve for x
    x = 332,774.52/946.72
  6. Step 6: Final answer
    x = 351.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 947.72, 1,421.55 and 235.34
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.