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Finding the Fourth Proportional to 1,543.43, 2,314.95 and 910.57

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Solution

The fourth proportional to 1,543.43, 2,314.95 and 910.57 is: 1,365.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.43 : 2,314.95 = 910.57 : x
  2. Step 2: Convert to fraction form
    1,543.43/2,314.95 = 910.57/x
  3. Step 3: Cross multiply
    1,543.43x = 2,314.95 × 910.57
  4. Step 4: Simplify right side
    1,543.43x = 2,107,921.72
  5. Step 5: Solve for x
    x = 2,107,921.72/1,543.43
  6. Step 6: Final answer
    x = 1,365.74

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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.