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Finding the Fourth Proportional to 502.48, 752.36 and 258.53

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Solution

The fourth proportional to 502.48, 752.36 and 258.53 is: 387.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.48 : 752.36 = 258.53 : x
  2. Step 2: Convert to fraction form
    502.48/752.36 = 258.53/x
  3. Step 3: Cross multiply
    502.48x = 752.36 × 258.53
  4. Step 4: Simplify right side
    502.48x = 194,502.58
  5. Step 5: Solve for x
    x = 194,502.58/502.48
  6. Step 6: Final answer
    x = 387.08

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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.