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Finding the Fourth Proportional to 754.80, 1,132.14 and 267.51

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Solution

The fourth proportional to 754.80, 1,132.14 and 267.51 is: 401.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.80 : 1,132.14 = 267.51 : x
  2. Step 2: Convert to fraction form
    754.80/1,132.14 = 267.51/x
  3. Step 3: Cross multiply
    754.80x = 1,132.14 × 267.51
  4. Step 4: Simplify right side
    754.80x = 302,858.77
  5. Step 5: Solve for x
    x = 302,858.77/754.80
  6. Step 6: Final answer
    x = 401.24

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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.