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Finding the Fourth Proportional to 362.92, 499.89 and 316.21

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Solution

The fourth proportional to 362.92, 499.89 and 316.21 is: 435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.92 : 499.89 = 316.21 : x
  2. Step 2: Convert to fraction form
    362.92/499.89 = 316.21/x
  3. Step 3: Cross multiply
    362.92x = 499.89 × 316.21
  4. Step 4: Simplify right side
    362.92x = 158,070.22
  5. Step 5: Solve for x
    x = 158,070.22/362.92
  6. Step 6: Final answer
    x = 435.55

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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.