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Finding the Fourth Proportional to 498.42, 748.54 and 396.36

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Solution

The fourth proportional to 498.42, 748.54 and 396.36 is: 595.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.42 : 748.54 = 396.36 : x
  2. Step 2: Convert to fraction form
    498.42/748.54 = 396.36/x
  3. Step 3: Cross multiply
    498.42x = 748.54 × 396.36
  4. Step 4: Simplify right side
    498.42x = 296,691.81
  5. Step 5: Solve for x
    x = 296,691.81/498.42
  6. Step 6: Final answer
    x = 595.26

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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.