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Finding the Fourth Proportional to 615.14, 848.98 and 394.73

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Solution

The fourth proportional to 615.14, 848.98 and 394.73 is: 544.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.14 : 848.98 = 394.73 : x
  2. Step 2: Convert to fraction form
    615.14/848.98 = 394.73/x
  3. Step 3: Cross multiply
    615.14x = 848.98 × 394.73
  4. Step 4: Simplify right side
    615.14x = 335,117.88
  5. Step 5: Solve for x
    x = 335,117.88/615.14
  6. Step 6: Final answer
    x = 544.78

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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.