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Finding the Fourth Proportional to 1,130.57, 1,560.17 and 736.85

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Solution

The fourth proportional to 1,130.57, 1,560.17 and 736.85 is: 1,016.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.57 : 1,560.17 = 736.85 : x
  2. Step 2: Convert to fraction form
    1,130.57/1,560.17 = 736.85/x
  3. Step 3: Cross multiply
    1,130.57x = 1,560.17 × 736.85
  4. Step 4: Simplify right side
    1,130.57x = 1,149,607.58
  5. Step 5: Solve for x
    x = 1,149,607.58/1,130.57
  6. Step 6: Final answer
    x = 1,016.84

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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.