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Finding the Fourth Proportional to 67.03, 100.99 and 55.84

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Solution

The fourth proportional to 67.03, 100.99 and 55.84 is: 84.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.03 : 100.99 = 55.84 : x
  2. Step 2: Convert to fraction form
    67.03/100.99 = 55.84/x
  3. Step 3: Cross multiply
    67.03x = 100.99 × 55.84
  4. Step 4: Simplify right side
    67.03x = 5,639.28
  5. Step 5: Solve for x
    x = 5,639.28/67.03
  6. Step 6: Final answer
    x = 84.13

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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.