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Finding the Fourth Proportional to 1,151.42, 1,723.68 and 997.52

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Solution

The fourth proportional to 1,151.42, 1,723.68 and 997.52 is: 1,493.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.42 : 1,723.68 = 997.52 : x
  2. Step 2: Convert to fraction form
    1,151.42/1,723.68 = 997.52/x
  3. Step 3: Cross multiply
    1,151.42x = 1,723.68 × 997.52
  4. Step 4: Simplify right side
    1,151.42x = 1,719,396.66
  5. Step 5: Solve for x
    x = 1,719,396.66/1,151.42
  6. Step 6: Final answer
    x = 1,493.29

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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.