Home / 648.11-972.15-161.16

Finding the Fourth Proportional to 648.11, 972.15 and 161.16

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Solution

The fourth proportional to 648.11, 972.15 and 161.16 is: 241.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.11 : 972.15 = 161.16 : x
  2. Step 2: Convert to fraction form
    648.11/972.15 = 161.16/x
  3. Step 3: Cross multiply
    648.11x = 972.15 × 161.16
  4. Step 4: Simplify right side
    648.11x = 156,671.69
  5. Step 5: Solve for x
    x = 156,671.69/648.11
  6. Step 6: Final answer
    x = 241.74

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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.