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Finding the Fourth Proportional to 316.50, 473.94 and 264.86

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Solution

The fourth proportional to 316.50, 473.94 and 264.86 is: 396.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.50 : 473.94 = 264.86 : x
  2. Step 2: Convert to fraction form
    316.50/473.94 = 264.86/x
  3. Step 3: Cross multiply
    316.50x = 473.94 × 264.86
  4. Step 4: Simplify right side
    316.50x = 125,527.75
  5. Step 5: Solve for x
    x = 125,527.75/316.50
  6. Step 6: Final answer
    x = 396.61

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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.