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Finding the Fourth Proportional to 615.24, 849.18 and 379.53

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Solution

The fourth proportional to 615.24, 849.18 and 379.53 is: 523.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.24 : 849.18 = 379.53 : x
  2. Step 2: Convert to fraction form
    615.24/849.18 = 379.53/x
  3. Step 3: Cross multiply
    615.24x = 849.18 × 379.53
  4. Step 4: Simplify right side
    615.24x = 322,289.29
  5. Step 5: Solve for x
    x = 322,289.29/615.24
  6. Step 6: Final answer
    x = 523.84

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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.