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Finding the Fourth Proportional to 217.24, 325.65 and 113.10

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Solution

The fourth proportional to 217.24, 325.65 and 113.10 is: 169.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.24 : 325.65 = 113.10 : x
  2. Step 2: Convert to fraction form
    217.24/325.65 = 113.10/x
  3. Step 3: Cross multiply
    217.24x = 325.65 × 113.10
  4. Step 4: Simplify right side
    217.24x = 36,831.02
  5. Step 5: Solve for x
    x = 36,831.02/217.24
  6. Step 6: Final answer
    x = 169.54

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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.