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Finding the Fourth Proportional to 529.38, 790.24 and 492.92

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Solution

The fourth proportional to 529.38, 790.24 and 492.92 is: 735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.38 : 790.24 = 492.92 : x
  2. Step 2: Convert to fraction form
    529.38/790.24 = 492.92/x
  3. Step 3: Cross multiply
    529.38x = 790.24 × 492.92
  4. Step 4: Simplify right side
    529.38x = 389,525.10
  5. Step 5: Solve for x
    x = 389,525.10/529.38
  6. Step 6: Final answer
    x = 735.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.