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Finding the Fourth Proportional to 502.03, 755.25 and 420.04

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Solution

The fourth proportional to 502.03, 755.25 and 420.04 is: 631.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.03 : 755.25 = 420.04 : x
  2. Step 2: Convert to fraction form
    502.03/755.25 = 420.04/x
  3. Step 3: Cross multiply
    502.03x = 755.25 × 420.04
  4. Step 4: Simplify right side
    502.03x = 317,235.21
  5. Step 5: Solve for x
    x = 317,235.21/502.03
  6. Step 6: Final answer
    x = 631.90

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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.