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Finding the Fourth Proportional to 529.04, 793.56 and 431.42

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Solution

The fourth proportional to 529.04, 793.56 and 431.42 is: 647.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.04 : 793.56 = 431.42 : x
  2. Step 2: Convert to fraction form
    529.04/793.56 = 431.42/x
  3. Step 3: Cross multiply
    529.04x = 793.56 × 431.42
  4. Step 4: Simplify right side
    529.04x = 342,357.66
  5. Step 5: Solve for x
    x = 342,357.66/529.04
  6. Step 6: Final answer
    x = 647.13

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Similar ratio
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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.