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Finding the Fourth Proportional to 69.84, 96.29 and 48.49

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Solution

The fourth proportional to 69.84, 96.29 and 48.49 is: 66.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.84 : 96.29 = 48.49 : x
  2. Step 2: Convert to fraction form
    69.84/96.29 = 48.49/x
  3. Step 3: Cross multiply
    69.84x = 96.29 × 48.49
  4. Step 4: Simplify right side
    69.84x = 4,669.10
  5. Step 5: Solve for x
    x = 4,669.10/69.84
  6. Step 6: Final answer
    x = 66.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.