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Finding the Fourth Proportional to 632.64, 877.68 and 609.60

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Solution

The fourth proportional to 632.64, 877.68 and 609.60 is: 845.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.64 : 877.68 = 609.60 : x
  2. Step 2: Convert to fraction form
    632.64/877.68 = 609.60/x
  3. Step 3: Cross multiply
    632.64x = 877.68 × 609.60
  4. Step 4: Simplify right side
    632.64x = 535,033.73
  5. Step 5: Solve for x
    x = 535,033.73/632.64
  6. Step 6: Final answer
    x = 845.72

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.