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Finding the Fourth Proportional to 115.01, 172.08 and 108.83

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Solution

The fourth proportional to 115.01, 172.08 and 108.83 is: 162.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.01 : 172.08 = 108.83 : x
  2. Step 2: Convert to fraction form
    115.01/172.08 = 108.83/x
  3. Step 3: Cross multiply
    115.01x = 172.08 × 108.83
  4. Step 4: Simplify right side
    115.01x = 18,727.47
  5. Step 5: Solve for x
    x = 18,727.47/115.01
  6. Step 6: Final answer
    x = 162.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.