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Finding the Fourth Proportional to 1,267.97, 1,901.97 and 574.50

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Solution

The fourth proportional to 1,267.97, 1,901.97 and 574.50 is: 861.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.97 : 1,901.97 = 574.50 : x
  2. Step 2: Convert to fraction form
    1,267.97/1,901.97 = 574.50/x
  3. Step 3: Cross multiply
    1,267.97x = 1,901.97 × 574.50
  4. Step 4: Simplify right side
    1,267.97x = 1,092,681.77
  5. Step 5: Solve for x
    x = 1,092,681.77/1,267.97
  6. Step 6: Final answer
    x = 861.76

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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.