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Finding the Fourth Proportional to 447.40, 616.80 and 335.53

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Solution

The fourth proportional to 447.40, 616.80 and 335.53 is: 462.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.40 : 616.80 = 335.53 : x
  2. Step 2: Convert to fraction form
    447.40/616.80 = 335.53/x
  3. Step 3: Cross multiply
    447.40x = 616.80 × 335.53
  4. Step 4: Simplify right side
    447.40x = 206,955.05
  5. Step 5: Solve for x
    x = 206,955.05/447.40
  6. Step 6: Final answer
    x = 462.58

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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.