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Finding the Fourth Proportional to 303.25, 418.53 and 178.87

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Solution

The fourth proportional to 303.25, 418.53 and 178.87 is: 246.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.25 : 418.53 = 178.87 : x
  2. Step 2: Convert to fraction form
    303.25/418.53 = 178.87/x
  3. Step 3: Cross multiply
    303.25x = 418.53 × 178.87
  4. Step 4: Simplify right side
    303.25x = 74,862.46
  5. Step 5: Solve for x
    x = 74,862.46/303.25
  6. Step 6: Final answer
    x = 246.87

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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.