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Finding the Fourth Proportional to 65.82, 97.62 and 65.28

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Solution

The fourth proportional to 65.82, 97.62 and 65.28 is: 96.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.82 : 97.62 = 65.28 : x
  2. Step 2: Convert to fraction form
    65.82/97.62 = 65.28/x
  3. Step 3: Cross multiply
    65.82x = 97.62 × 65.28
  4. Step 4: Simplify right side
    65.82x = 6,372.63
  5. Step 5: Solve for x
    x = 6,372.63/65.82
  6. Step 6: Final answer
    x = 96.82

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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.