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Finding the Fourth Proportional to 303.60, 418.86 and 177.55

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Solution

The fourth proportional to 303.60, 418.86 and 177.55 is: 244.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.60 : 418.86 = 177.55 : x
  2. Step 2: Convert to fraction form
    303.60/418.86 = 177.55/x
  3. Step 3: Cross multiply
    303.60x = 418.86 × 177.55
  4. Step 4: Simplify right side
    303.60x = 74,367.55
  5. Step 5: Solve for x
    x = 74,367.55/303.60
  6. Step 6: Final answer
    x = 244.95

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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.