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Finding the Fourth Proportional to 67.63, 101.29 and 65.35

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Solution

The fourth proportional to 67.63, 101.29 and 65.35 is: 97.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.63 : 101.29 = 65.35 : x
  2. Step 2: Convert to fraction form
    67.63/101.29 = 65.35/x
  3. Step 3: Cross multiply
    67.63x = 101.29 × 65.35
  4. Step 4: Simplify right side
    67.63x = 6,619.20
  5. Step 5: Solve for x
    x = 6,619.20/67.63
  6. Step 6: Final answer
    x = 97.88

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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.