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Finding the Fourth Proportional to 97.76, 144.64 and 97.44

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Solution

The fourth proportional to 97.76, 144.64 and 97.44 is: 144.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.76 : 144.64 = 97.44 : x
  2. Step 2: Convert to fraction form
    97.76/144.64 = 97.44/x
  3. Step 3: Cross multiply
    97.76x = 144.64 × 97.44
  4. Step 4: Simplify right side
    97.76x = 14,093.72
  5. Step 5: Solve for x
    x = 14,093.72/97.76
  6. Step 6: Final answer
    x = 144.17

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.