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Finding the Fourth Proportional to 1,454.39, 2,006.62 and 824.89

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Solution

The fourth proportional to 1,454.39, 2,006.62 and 824.89 is: 1,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.39 : 2,006.62 = 824.89 : x
  2. Step 2: Convert to fraction form
    1,454.39/2,006.62 = 824.89/x
  3. Step 3: Cross multiply
    1,454.39x = 2,006.62 × 824.89
  4. Step 4: Simplify right side
    1,454.39x = 1,655,233.69
  5. Step 5: Solve for x
    x = 1,655,233.69/1,454.39
  6. Step 6: Final answer
    x = 1,138.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.