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Finding the Fourth Proportional to 1,267.51, 1,901.22 and 574.18

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Solution

The fourth proportional to 1,267.51, 1,901.22 and 574.18 is: 861.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.51 : 1,901.22 = 574.18 : x
  2. Step 2: Convert to fraction form
    1,267.51/1,901.22 = 574.18/x
  3. Step 3: Cross multiply
    1,267.51x = 1,901.22 × 574.18
  4. Step 4: Simplify right side
    1,267.51x = 1,091,642.28
  5. Step 5: Solve for x
    x = 1,091,642.28/1,267.51
  6. Step 6: Final answer
    x = 861.25

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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.