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Finding the Fourth Proportional to 1,132.81, 1,564.18 and 760.12

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Solution

The fourth proportional to 1,132.81, 1,564.18 and 760.12 is: 1,049.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.81 : 1,564.18 = 760.12 : x
  2. Step 2: Convert to fraction form
    1,132.81/1,564.18 = 760.12/x
  3. Step 3: Cross multiply
    1,132.81x = 1,564.18 × 760.12
  4. Step 4: Simplify right side
    1,132.81x = 1,188,958.69
  5. Step 5: Solve for x
    x = 1,188,958.69/1,132.81
  6. Step 6: Final answer
    x = 1,049.57

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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.