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Finding the Fourth Proportional to 615.74, 849.72 and 335.97

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Solution

The fourth proportional to 615.74, 849.72 and 335.97 is: 463.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.74 : 849.72 = 335.97 : x
  2. Step 2: Convert to fraction form
    615.74/849.72 = 335.97/x
  3. Step 3: Cross multiply
    615.74x = 849.72 × 335.97
  4. Step 4: Simplify right side
    615.74x = 285,479.45
  5. Step 5: Solve for x
    x = 285,479.45/615.74
  6. Step 6: Final answer
    x = 463.64

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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.