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Finding the Fourth Proportional to 316.12, 474.26 and 310.68

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Solution

The fourth proportional to 316.12, 474.26 and 310.68 is: 466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.12 : 474.26 = 310.68 : x
  2. Step 2: Convert to fraction form
    316.12/474.26 = 310.68/x
  3. Step 3: Cross multiply
    316.12x = 474.26 × 310.68
  4. Step 4: Simplify right side
    316.12x = 147,343.10
  5. Step 5: Solve for x
    x = 147,343.10/316.12
  6. Step 6: Final answer
    x = 466.10

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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.