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Finding the Fourth Proportional to 888.12, 1,332.12 and 238.80

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Solution

The fourth proportional to 888.12, 1,332.12 and 238.80 is: 358.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.12 : 1,332.12 = 238.80 : x
  2. Step 2: Convert to fraction form
    888.12/1,332.12 = 238.80/x
  3. Step 3: Cross multiply
    888.12x = 1,332.12 × 238.80
  4. Step 4: Simplify right side
    888.12x = 318,110.26
  5. Step 5: Solve for x
    x = 318,110.26/888.12
  6. Step 6: Final answer
    x = 358.18

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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.