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Finding the Fourth Proportional to 229.95, 317.37 and 131.76

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Solution

The fourth proportional to 229.95, 317.37 and 131.76 is: 181.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.95 : 317.37 = 131.76 : x
  2. Step 2: Convert to fraction form
    229.95/317.37 = 131.76/x
  3. Step 3: Cross multiply
    229.95x = 317.37 × 131.76
  4. Step 4: Simplify right side
    229.95x = 41,816.67
  5. Step 5: Solve for x
    x = 41,816.67/229.95
  6. Step 6: Final answer
    x = 181.85

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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.