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Finding the Fourth Proportional to 502.03, 754.53 and 415.91

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Solution

The fourth proportional to 502.03, 754.53 and 415.91 is: 625.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.03 : 754.53 = 415.91 : x
  2. Step 2: Convert to fraction form
    502.03/754.53 = 415.91/x
  3. Step 3: Cross multiply
    502.03x = 754.53 × 415.91
  4. Step 4: Simplify right side
    502.03x = 313,816.57
  5. Step 5: Solve for x
    x = 313,816.57/502.03
  6. Step 6: Final answer
    x = 625.10

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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.