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Finding the Fourth Proportional to 303.26, 418.40 and 177.20

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Solution

The fourth proportional to 303.26, 418.40 and 177.20 is: 244.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.26 : 418.40 = 177.20 : x
  2. Step 2: Convert to fraction form
    303.26/418.40 = 177.20/x
  3. Step 3: Cross multiply
    303.26x = 418.40 × 177.20
  4. Step 4: Simplify right side
    303.26x = 74,140.48
  5. Step 5: Solve for x
    x = 74,140.48/303.26
  6. Step 6: Final answer
    x = 244.48

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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.