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Finding the Fourth Proportional to 499.12, 748.68 and 174.49

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Solution

The fourth proportional to 499.12, 748.68 and 174.49 is: 261.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.12 : 748.68 = 174.49 : x
  2. Step 2: Convert to fraction form
    499.12/748.68 = 174.49/x
  3. Step 3: Cross multiply
    499.12x = 748.68 × 174.49
  4. Step 4: Simplify right side
    499.12x = 130,637.17
  5. Step 5: Solve for x
    x = 130,637.17/499.12
  6. Step 6: Final answer
    x = 261.74

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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.