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Finding the Fourth Proportional to 1,432.53, 1,974.38 and 1,232.86

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Solution

The fourth proportional to 1,432.53, 1,974.38 and 1,232.86 is: 1,699.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.53 : 1,974.38 = 1,232.86 : x
  2. Step 2: Convert to fraction form
    1,432.53/1,974.38 = 1,232.86/x
  3. Step 3: Cross multiply
    1,432.53x = 1,974.38 × 1,232.86
  4. Step 4: Simplify right side
    1,432.53x = 2,434,132.28
  5. Step 5: Solve for x
    x = 2,434,132.28/1,432.53
  6. Step 6: Final answer
    x = 1,699.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.