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Finding the Fourth Proportional to 888.11, 1,225.69 and 534.15

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Solution

The fourth proportional to 888.11, 1,225.69 and 534.15 is: 737.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.11 : 1,225.69 = 534.15 : x
  2. Step 2: Convert to fraction form
    888.11/1,225.69 = 534.15/x
  3. Step 3: Cross multiply
    888.11x = 1,225.69 × 534.15
  4. Step 4: Simplify right side
    888.11x = 654,696.58
  5. Step 5: Solve for x
    x = 654,696.58/888.11
  6. Step 6: Final answer
    x = 737.18

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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.