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Finding the Fourth Proportional to 363.45, 500.30 and 316.15

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Solution

The fourth proportional to 363.45, 500.30 and 316.15 is: 435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.45 : 500.30 = 316.15 : x
  2. Step 2: Convert to fraction form
    363.45/500.30 = 316.15/x
  3. Step 3: Cross multiply
    363.45x = 500.30 × 316.15
  4. Step 4: Simplify right side
    363.45x = 158,168.26
  5. Step 5: Solve for x
    x = 158,168.26/363.45
  6. Step 6: Final answer
    x = 435.19

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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.