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Finding the Fourth Proportional to 529.87, 731.37 and 479.77

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Solution

The fourth proportional to 529.87, 731.37 and 479.77 is: 662.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.87 : 731.37 = 479.77 : x
  2. Step 2: Convert to fraction form
    529.87/731.37 = 479.77/x
  3. Step 3: Cross multiply
    529.87x = 731.37 × 479.77
  4. Step 4: Simplify right side
    529.87x = 350,889.38
  5. Step 5: Solve for x
    x = 350,889.38/529.87
  6. Step 6: Final answer
    x = 662.22

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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.