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Finding the Fourth Proportional to 888.28, 1,332.44 and 340.72

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Solution

The fourth proportional to 888.28, 1,332.44 and 340.72 is: 511.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.28 : 1,332.44 = 340.72 : x
  2. Step 2: Convert to fraction form
    888.28/1,332.44 = 340.72/x
  3. Step 3: Cross multiply
    888.28x = 1,332.44 × 340.72
  4. Step 4: Simplify right side
    888.28x = 453,988.96
  5. Step 5: Solve for x
    x = 453,988.96/888.28
  6. Step 6: Final answer
    x = 511.09

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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.