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Finding the Fourth Proportional to 67.36, 101.55 and 63.10

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Solution

The fourth proportional to 67.36, 101.55 and 63.10 is: 95.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.36 : 101.55 = 63.10 : x
  2. Step 2: Convert to fraction form
    67.36/101.55 = 63.10/x
  3. Step 3: Cross multiply
    67.36x = 101.55 × 63.10
  4. Step 4: Simplify right side
    67.36x = 6,407.81
  5. Step 5: Solve for x
    x = 6,407.81/67.36
  6. Step 6: Final answer
    x = 95.13

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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.