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Finding the Fourth Proportional to 106.24, 158.72 and 104.64

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Solution

The fourth proportional to 106.24, 158.72 and 104.64 is: 156.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.24 : 158.72 = 104.64 : x
  2. Step 2: Convert to fraction form
    106.24/158.72 = 104.64/x
  3. Step 3: Cross multiply
    106.24x = 158.72 × 104.64
  4. Step 4: Simplify right side
    106.24x = 16,608.46
  5. Step 5: Solve for x
    x = 16,608.46/106.24
  6. Step 6: Final answer
    x = 156.33

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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.