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Finding the Fourth Proportional to 1,132.92, 1,563.39 and 691.56

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Solution

The fourth proportional to 1,132.92, 1,563.39 and 691.56 is: 954.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.92 : 1,563.39 = 691.56 : x
  2. Step 2: Convert to fraction form
    1,132.92/1,563.39 = 691.56/x
  3. Step 3: Cross multiply
    1,132.92x = 1,563.39 × 691.56
  4. Step 4: Simplify right side
    1,132.92x = 1,081,177.99
  5. Step 5: Solve for x
    x = 1,081,177.99/1,132.92
  6. Step 6: Final answer
    x = 954.33

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Double scale
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1.5x scale

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.