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Finding the Fourth Proportional to 362.75, 500.99 and 315.90

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Solution

The fourth proportional to 362.75, 500.99 and 315.90 is: 436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.75 : 500.99 = 315.90 : x
  2. Step 2: Convert to fraction form
    362.75/500.99 = 315.90/x
  3. Step 3: Cross multiply
    362.75x = 500.99 × 315.90
  4. Step 4: Simplify right side
    362.75x = 158,261.16
  5. Step 5: Solve for x
    x = 158,261.16/362.75
  6. Step 6: Final answer
    x = 436.29

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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.