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Finding the Fourth Proportional to 1,454.36, 2,177.89 and 992.35

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Solution

The fourth proportional to 1,454.36, 2,177.89 and 992.35 is: 1,486.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.36 : 2,177.89 = 992.35 : x
  2. Step 2: Convert to fraction form
    1,454.36/2,177.89 = 992.35/x
  3. Step 3: Cross multiply
    1,454.36x = 2,177.89 × 992.35
  4. Step 4: Simplify right side
    1,454.36x = 2,161,229.38
  5. Step 5: Solve for x
    x = 2,161,229.38/1,454.36
  6. Step 6: Final answer
    x = 1,486.04

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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.