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Finding the Fourth Proportional to 8.83, 12.18 and 5.60

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Solution

The fourth proportional to 8.83, 12.18 and 5.60 is: 7.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.83 : 12.18 = 5.60 : x
  2. Step 2: Convert to fraction form
    8.83/12.18 = 5.60/x
  3. Step 3: Cross multiply
    8.83x = 12.18 × 5.60
  4. Step 4: Simplify right side
    8.83x = 68.21
  5. Step 5: Solve for x
    x = 68.21/8.83
  6. Step 6: Final answer
    x = 7.72

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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.