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Finding the Fourth Proportional to 530.38, 731.86 and 294.31

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Solution

The fourth proportional to 530.38, 731.86 and 294.31 is: 406.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.38 : 731.86 = 294.31 : x
  2. Step 2: Convert to fraction form
    530.38/731.86 = 294.31/x
  3. Step 3: Cross multiply
    530.38x = 731.86 × 294.31
  4. Step 4: Simplify right side
    530.38x = 215,393.72
  5. Step 5: Solve for x
    x = 215,393.72/530.38
  6. Step 6: Final answer
    x = 406.11

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.