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Finding the Fourth Proportional to 225.26, 338.28 and 117.20

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Solution

The fourth proportional to 225.26, 338.28 and 117.20 is: 176.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.26 : 338.28 = 117.20 : x
  2. Step 2: Convert to fraction form
    225.26/338.28 = 117.20/x
  3. Step 3: Cross multiply
    225.26x = 338.28 × 117.20
  4. Step 4: Simplify right side
    225.26x = 39,646.42
  5. Step 5: Solve for x
    x = 39,646.42/225.26
  6. Step 6: Final answer
    x = 176.00

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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.