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Finding the Fourth Proportional to 913.27, 1,369.73 and 760.18

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Solution

The fourth proportional to 913.27, 1,369.73 and 760.18 is: 1,140.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.27 : 1,369.73 = 760.18 : x
  2. Step 2: Convert to fraction form
    913.27/1,369.73 = 760.18/x
  3. Step 3: Cross multiply
    913.27x = 1,369.73 × 760.18
  4. Step 4: Simplify right side
    913.27x = 1,041,244.78
  5. Step 5: Solve for x
    x = 1,041,244.78/913.27
  6. Step 6: Final answer
    x = 1,140.12

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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.