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Finding the Fourth Proportional to 615.70, 849.31 and 363.70

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Solution

The fourth proportional to 615.70, 849.31 and 363.70 is: 501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.70 : 849.31 = 363.70 : x
  2. Step 2: Convert to fraction form
    615.70/849.31 = 363.70/x
  3. Step 3: Cross multiply
    615.70x = 849.31 × 363.70
  4. Step 4: Simplify right side
    615.70x = 308,896.25
  5. Step 5: Solve for x
    x = 308,896.25/615.70
  6. Step 6: Final answer
    x = 501.70

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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.