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Finding the Fourth Proportional to 343.32, 474.40 and 244.90

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Solution

The fourth proportional to 343.32, 474.40 and 244.90 is: 338.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.32 : 474.40 = 244.90 : x
  2. Step 2: Convert to fraction form
    343.32/474.40 = 244.90/x
  3. Step 3: Cross multiply
    343.32x = 474.40 × 244.90
  4. Step 4: Simplify right side
    343.32x = 116,180.56
  5. Step 5: Solve for x
    x = 116,180.56/343.32
  6. Step 6: Final answer
    x = 338.40

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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.