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Finding the Fourth Proportional to 529.56, 731.70 and 436.14

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Solution

The fourth proportional to 529.56, 731.70 and 436.14 is: 602.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.56 : 731.70 = 436.14 : x
  2. Step 2: Convert to fraction form
    529.56/731.70 = 436.14/x
  3. Step 3: Cross multiply
    529.56x = 731.70 × 436.14
  4. Step 4: Simplify right side
    529.56x = 319,123.64
  5. Step 5: Solve for x
    x = 319,123.64/529.56
  6. Step 6: Final answer
    x = 602.62

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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.