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Finding the Fourth Proportional to 888.20, 1,332.27 and 394.59

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Solution

The fourth proportional to 888.20, 1,332.27 and 394.59 is: 591.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.20 : 1,332.27 = 394.59 : x
  2. Step 2: Convert to fraction form
    888.20/1,332.27 = 394.59/x
  3. Step 3: Cross multiply
    888.20x = 1,332.27 × 394.59
  4. Step 4: Simplify right side
    888.20x = 525,700.42
  5. Step 5: Solve for x
    x = 525,700.42/888.20
  6. Step 6: Final answer
    x = 591.88

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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.