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Finding the Fourth Proportional to 615.59, 848.84 and 394.46

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Solution

The fourth proportional to 615.59, 848.84 and 394.46 is: 543.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.59 : 848.84 = 394.46 : x
  2. Step 2: Convert to fraction form
    615.59/848.84 = 394.46/x
  3. Step 3: Cross multiply
    615.59x = 848.84 × 394.46
  4. Step 4: Simplify right side
    615.59x = 334,833.43
  5. Step 5: Solve for x
    x = 334,833.43/615.59
  6. Step 6: Final answer
    x = 543.92

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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.