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Finding the Fourth Proportional to 1,432.59, 2,149.49 and 610.64

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Solution

The fourth proportional to 1,432.59, 2,149.49 and 610.64 is: 916.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.59 : 2,149.49 = 610.64 : x
  2. Step 2: Convert to fraction form
    1,432.59/2,149.49 = 610.64/x
  3. Step 3: Cross multiply
    1,432.59x = 2,149.49 × 610.64
  4. Step 4: Simplify right side
    1,432.59x = 1,312,559.98
  5. Step 5: Solve for x
    x = 1,312,559.98/1,432.59
  6. Step 6: Final answer
    x = 916.22

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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.