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Finding the Fourth Proportional to 644.36, 966.54 and 233.42

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Solution

The fourth proportional to 644.36, 966.54 and 233.42 is: 350.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.36 : 966.54 = 233.42 : x
  2. Step 2: Convert to fraction form
    644.36/966.54 = 233.42/x
  3. Step 3: Cross multiply
    644.36x = 966.54 × 233.42
  4. Step 4: Simplify right side
    644.36x = 225,609.77
  5. Step 5: Solve for x
    x = 225,609.77/644.36
  6. Step 6: Final answer
    x = 350.13

Related Problems

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Half scale
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Double scale
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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.