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Finding the Fourth Proportional to 216.59, 324.69 and 94.76

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Solution

The fourth proportional to 216.59, 324.69 and 94.76 is: 142.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.59 : 324.69 = 94.76 : x
  2. Step 2: Convert to fraction form
    216.59/324.69 = 94.76/x
  3. Step 3: Cross multiply
    216.59x = 324.69 × 94.76
  4. Step 4: Simplify right side
    216.59x = 30,766.24
  5. Step 5: Solve for x
    x = 30,766.24/216.59
  6. Step 6: Final answer
    x = 142.05

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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.