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Finding the Fourth Proportional to 1,338.88, 2,008.85 and 714.17

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Solution

The fourth proportional to 1,338.88, 2,008.85 and 714.17 is: 1,071.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.88 : 2,008.85 = 714.17 : x
  2. Step 2: Convert to fraction form
    1,338.88/2,008.85 = 714.17/x
  3. Step 3: Cross multiply
    1,338.88x = 2,008.85 × 714.17
  4. Step 4: Simplify right side
    1,338.88x = 1,434,654.57
  5. Step 5: Solve for x
    x = 1,434,654.57/1,338.88
  6. Step 6: Final answer
    x = 1,071.53

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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.