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Finding the Fourth Proportional to 316.56, 475.10 and 243.24

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Solution

The fourth proportional to 316.56, 475.10 and 243.24 is: 365.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.56 : 475.10 = 243.24 : x
  2. Step 2: Convert to fraction form
    316.56/475.10 = 243.24/x
  3. Step 3: Cross multiply
    316.56x = 475.10 × 243.24
  4. Step 4: Simplify right side
    316.56x = 115,563.32
  5. Step 5: Solve for x
    x = 115,563.32/316.56
  6. Step 6: Final answer
    x = 365.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.