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Finding the Fourth Proportional to 1,338.62, 2,007.14 and 460.82

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Solution

The fourth proportional to 1,338.62, 2,007.14 and 460.82 is: 690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.62 : 2,007.14 = 460.82 : x
  2. Step 2: Convert to fraction form
    1,338.62/2,007.14 = 460.82/x
  3. Step 3: Cross multiply
    1,338.62x = 2,007.14 × 460.82
  4. Step 4: Simplify right side
    1,338.62x = 924,930.25
  5. Step 5: Solve for x
    x = 924,930.25/1,338.62
  6. Step 6: Final answer
    x = 690.96

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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.