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Finding the Fourth Proportional to 67.16, 93.18 and 63.82

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Solution

The fourth proportional to 67.16, 93.18 and 63.82 is: 88.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.16 : 93.18 = 63.82 : x
  2. Step 2: Convert to fraction form
    67.16/93.18 = 63.82/x
  3. Step 3: Cross multiply
    67.16x = 93.18 × 63.82
  4. Step 4: Simplify right side
    67.16x = 5,946.51
  5. Step 5: Solve for x
    x = 5,946.51/67.16
  6. Step 6: Final answer
    x = 88.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.