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Finding the Fourth Proportional to 1,579.17, 2,368.54 and 654.61

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Solution

The fourth proportional to 1,579.17, 2,368.54 and 654.61 is: 981.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.17 : 2,368.54 = 654.61 : x
  2. Step 2: Convert to fraction form
    1,579.17/2,368.54 = 654.61/x
  3. Step 3: Cross multiply
    1,579.17x = 2,368.54 × 654.61
  4. Step 4: Simplify right side
    1,579.17x = 1,550,469.97
  5. Step 5: Solve for x
    x = 1,550,469.97/1,579.17
  6. Step 6: Final answer
    x = 981.83

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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.