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Finding the Fourth Proportional to 766.60, 1,150.48 and 474.32

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Solution

The fourth proportional to 766.60, 1,150.48 and 474.32 is: 711.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    766.60 : 1,150.48 = 474.32 : x
  2. Step 2: Convert to fraction form
    766.60/1,150.48 = 474.32/x
  3. Step 3: Cross multiply
    766.60x = 1,150.48 × 474.32
  4. Step 4: Simplify right side
    766.60x = 545,695.67
  5. Step 5: Solve for x
    x = 545,695.67/766.60
  6. Step 6: Final answer
    x = 711.84

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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.