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Finding the Fourth Proportional to 615.17, 848.76 and 379.04

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Solution

The fourth proportional to 615.17, 848.76 and 379.04 is: 522.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.17 : 848.76 = 379.04 : x
  2. Step 2: Convert to fraction form
    615.17/848.76 = 379.04/x
  3. Step 3: Cross multiply
    615.17x = 848.76 × 379.04
  4. Step 4: Simplify right side
    615.17x = 321,713.99
  5. Step 5: Solve for x
    x = 321,713.99/615.17
  6. Step 6: Final answer
    x = 522.97

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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.