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Finding the Fourth Proportional to 884.10, 1,220.13 and 534.66

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Solution

The fourth proportional to 884.10, 1,220.13 and 534.66 is: 737.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.10 : 1,220.13 = 534.66 : x
  2. Step 2: Convert to fraction form
    884.10/1,220.13 = 534.66/x
  3. Step 3: Cross multiply
    884.10x = 1,220.13 × 534.66
  4. Step 4: Simplify right side
    884.10x = 652,354.71
  5. Step 5: Solve for x
    x = 652,354.71/884.10
  6. Step 6: Final answer
    x = 737.87

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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.