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Finding the Fourth Proportional to 830.96, 1,246.43 and 344.35

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Solution

The fourth proportional to 830.96, 1,246.43 and 344.35 is: 516.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.96 : 1,246.43 = 344.35 : x
  2. Step 2: Convert to fraction form
    830.96/1,246.43 = 344.35/x
  3. Step 3: Cross multiply
    830.96x = 1,246.43 × 344.35
  4. Step 4: Simplify right side
    830.96x = 429,201.94
  5. Step 5: Solve for x
    x = 429,201.94/830.96
  6. Step 6: Final answer
    x = 516.52

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Half scale
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Double scale
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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.