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Finding the Fourth Proportional to 1,254.76, 1,731.84 and 731.09

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Solution

The fourth proportional to 1,254.76, 1,731.84 and 731.09 is: 1,009.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.76 : 1,731.84 = 731.09 : x
  2. Step 2: Convert to fraction form
    1,254.76/1,731.84 = 731.09/x
  3. Step 3: Cross multiply
    1,254.76x = 1,731.84 × 731.09
  4. Step 4: Simplify right side
    1,254.76x = 1,266,130.91
  5. Step 5: Solve for x
    x = 1,266,130.91/1,254.76
  6. Step 6: Final answer
    x = 1,009.07

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.