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Finding the Fourth Proportional to 1,062.10, 1,591.80 and 574.75

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Solution

The fourth proportional to 1,062.10, 1,591.80 and 574.75 is: 861.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.10 : 1,591.80 = 574.75 : x
  2. Step 2: Convert to fraction form
    1,062.10/1,591.80 = 574.75/x
  3. Step 3: Cross multiply
    1,062.10x = 1,591.80 × 574.75
  4. Step 4: Simplify right side
    1,062.10x = 914,887.05
  5. Step 5: Solve for x
    x = 914,887.05/1,062.10
  6. Step 6: Final answer
    x = 861.39

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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.