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Finding the Fourth Proportional to 131.41, 181.27 and 115.08

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Solution

The fourth proportional to 131.41, 181.27 and 115.08 is: 158.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.41 : 181.27 = 115.08 : x
  2. Step 2: Convert to fraction form
    131.41/181.27 = 115.08/x
  3. Step 3: Cross multiply
    131.41x = 181.27 × 115.08
  4. Step 4: Simplify right side
    131.41x = 20,859.07
  5. Step 5: Solve for x
    x = 20,859.07/131.41
  6. Step 6: Final answer
    x = 158.73

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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.