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Finding the Fourth Proportional to 1,167.10, 1,747.17 and 755.05

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Solution

The fourth proportional to 1,167.10, 1,747.17 and 755.05 is: 1,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.10 : 1,747.17 = 755.05 : x
  2. Step 2: Convert to fraction form
    1,167.10/1,747.17 = 755.05/x
  3. Step 3: Cross multiply
    1,167.10x = 1,747.17 × 755.05
  4. Step 4: Simplify right side
    1,167.10x = 1,319,200.71
  5. Step 5: Solve for x
    x = 1,319,200.71/1,167.10
  6. Step 6: Final answer
    x = 1,130.32

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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.