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Finding the Fourth Proportional to 1,267.89, 1,901.17 and 574.22

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Solution

The fourth proportional to 1,267.89, 1,901.17 and 574.22 is: 861.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.89 : 1,901.17 = 574.22 : x
  2. Step 2: Convert to fraction form
    1,267.89/1,901.17 = 574.22/x
  3. Step 3: Cross multiply
    1,267.89x = 1,901.17 × 574.22
  4. Step 4: Simplify right side
    1,267.89x = 1,091,686.97
  5. Step 5: Solve for x
    x = 1,091,686.97/1,267.89
  6. Step 6: Final answer
    x = 861.03

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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.