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Finding the Fourth Proportional to 278.28, 418.37 and 224.51

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Solution

The fourth proportional to 278.28, 418.37 and 224.51 is: 337.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.28 : 418.37 = 224.51 : x
  2. Step 2: Convert to fraction form
    278.28/418.37 = 224.51/x
  3. Step 3: Cross multiply
    278.28x = 418.37 × 224.51
  4. Step 4: Simplify right side
    278.28x = 93,925.03
  5. Step 5: Solve for x
    x = 93,925.03/278.28
  6. Step 6: Final answer
    x = 337.52

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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.