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Finding the Fourth Proportional to 1,543.38, 2,315.36 and 569.55

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Solution

The fourth proportional to 1,543.38, 2,315.36 and 569.55 is: 854.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.38 : 2,315.36 = 569.55 : x
  2. Step 2: Convert to fraction form
    1,543.38/2,315.36 = 569.55/x
  3. Step 3: Cross multiply
    1,543.38x = 2,315.36 × 569.55
  4. Step 4: Simplify right side
    1,543.38x = 1,318,713.29
  5. Step 5: Solve for x
    x = 1,318,713.29/1,543.38
  6. Step 6: Final answer
    x = 854.43

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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.