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Finding the Fourth Proportional to 766.76, 1,149.04 and 376.46

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Solution

The fourth proportional to 766.76, 1,149.04 and 376.46 is: 564.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    766.76 : 1,149.04 = 376.46 : x
  2. Step 2: Convert to fraction form
    766.76/1,149.04 = 376.46/x
  3. Step 3: Cross multiply
    766.76x = 1,149.04 × 376.46
  4. Step 4: Simplify right side
    766.76x = 432,567.60
  5. Step 5: Solve for x
    x = 432,567.60/766.76
  6. Step 6: Final answer
    x = 564.15

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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.