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Finding the Fourth Proportional to 502.77, 752.67 and 490.35

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Solution

The fourth proportional to 502.77, 752.67 and 490.35 is: 734.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.77 : 752.67 = 490.35 : x
  2. Step 2: Convert to fraction form
    502.77/752.67 = 490.35/x
  3. Step 3: Cross multiply
    502.77x = 752.67 × 490.35
  4. Step 4: Simplify right side
    502.77x = 369,071.73
  5. Step 5: Solve for x
    x = 369,071.73/502.77
  6. Step 6: Final answer
    x = 734.08

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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.