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Finding the Fourth Proportional to 1,115.50, 1,672.76 and 595.39

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Solution

The fourth proportional to 1,115.50, 1,672.76 and 595.39 is: 892.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.50 : 1,672.76 = 595.39 : x
  2. Step 2: Convert to fraction form
    1,115.50/1,672.76 = 595.39/x
  3. Step 3: Cross multiply
    1,115.50x = 1,672.76 × 595.39
  4. Step 4: Simplify right side
    1,115.50x = 995,936.21
  5. Step 5: Solve for x
    x = 995,936.21/1,115.50
  6. Step 6: Final answer
    x = 892.82

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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.