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Finding the Fourth Proportional to 864.24, 1,191.24 and 677.04

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Solution

The fourth proportional to 864.24, 1,191.24 and 677.04 is: 933.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.24 : 1,191.24 = 677.04 : x
  2. Step 2: Convert to fraction form
    864.24/1,191.24 = 677.04/x
  3. Step 3: Cross multiply
    864.24x = 1,191.24 × 677.04
  4. Step 4: Simplify right side
    864.24x = 806,517.13
  5. Step 5: Solve for x
    x = 806,517.13/864.24
  6. Step 6: Final answer
    x = 933.21

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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.