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Finding the Fourth Proportional to 632.80, 949.40 and 267.60

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Solution

The fourth proportional to 632.80, 949.40 and 267.60 is: 401.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.80 : 949.40 = 267.60 : x
  2. Step 2: Convert to fraction form
    632.80/949.40 = 267.60/x
  3. Step 3: Cross multiply
    632.80x = 949.40 × 267.60
  4. Step 4: Simplify right side
    632.80x = 254,058.10
  5. Step 5: Solve for x
    x = 254,058.10/632.80
  6. Step 6: Final answer
    x = 401.49

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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.