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Finding the Fourth Proportional to 7.87, 10.88 and 6.06

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Solution

The fourth proportional to 7.87, 10.88 and 6.06 is: 8.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.87 : 10.88 = 6.06 : x
  2. Step 2: Convert to fraction form
    7.87/10.88 = 6.06/x
  3. Step 3: Cross multiply
    7.87x = 10.88 × 6.06
  4. Step 4: Simplify right side
    7.87x = 65.90
  5. Step 5: Solve for x
    x = 65.90/7.87
  6. Step 6: Final answer
    x = 8.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.