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Finding the Fourth Proportional to 883.16, 1,324.86 and 513.14

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Solution

The fourth proportional to 883.16, 1,324.86 and 513.14 is: 769.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.16 : 1,324.86 = 513.14 : x
  2. Step 2: Convert to fraction form
    883.16/1,324.86 = 513.14/x
  3. Step 3: Cross multiply
    883.16x = 1,324.86 × 513.14
  4. Step 4: Simplify right side
    883.16x = 679,841.97
  5. Step 5: Solve for x
    x = 679,841.97/883.16
  6. Step 6: Final answer
    x = 769.78

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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.