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Finding the Fourth Proportional to 144.03, 216.95 and 131.27

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Solution

The fourth proportional to 144.03, 216.95 and 131.27 is: 197.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.03 : 216.95 = 131.27 : x
  2. Step 2: Convert to fraction form
    144.03/216.95 = 131.27/x
  3. Step 3: Cross multiply
    144.03x = 216.95 × 131.27
  4. Step 4: Simplify right side
    144.03x = 28,477.29
  5. Step 5: Solve for x
    x = 28,477.29/144.03
  6. Step 6: Final answer
    x = 197.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.