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Finding the Fourth Proportional to 8.95, 13.32 and 8.77

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Solution

The fourth proportional to 8.95, 13.32 and 8.77 is: 13.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.95 : 13.32 = 8.77 : x
  2. Step 2: Convert to fraction form
    8.95/13.32 = 8.77/x
  3. Step 3: Cross multiply
    8.95x = 13.32 × 8.77
  4. Step 4: Simplify right side
    8.95x = 116.82
  5. Step 5: Solve for x
    x = 116.82/8.95
  6. Step 6: Final answer
    x = 13.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.