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Finding the Fourth Proportional to 913.92, 1,370.55 and 566.73

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Solution

The fourth proportional to 913.92, 1,370.55 and 566.73 is: 849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.92 : 1,370.55 = 566.73 : x
  2. Step 2: Convert to fraction form
    913.92/1,370.55 = 566.73/x
  3. Step 3: Cross multiply
    913.92x = 1,370.55 × 566.73
  4. Step 4: Simplify right side
    913.92x = 776,731.80
  5. Step 5: Solve for x
    x = 776,731.80/913.92
  6. Step 6: Final answer
    x = 849.89

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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.