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Finding the Fourth Proportional to 766.47, 1,149.66 and 304.23

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Solution

The fourth proportional to 766.47, 1,149.66 and 304.23 is: 456.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    766.47 : 1,149.66 = 304.23 : x
  2. Step 2: Convert to fraction form
    766.47/1,149.66 = 304.23/x
  3. Step 3: Cross multiply
    766.47x = 1,149.66 × 304.23
  4. Step 4: Simplify right side
    766.47x = 349,761.06
  5. Step 5: Solve for x
    x = 349,761.06/766.47
  6. Step 6: Final answer
    x = 456.33

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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.