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Finding the Fourth Proportional to 631.30, 945.72 and 314.23

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Solution

The fourth proportional to 631.30, 945.72 and 314.23 is: 470.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.30 : 945.72 = 314.23 : x
  2. Step 2: Convert to fraction form
    631.30/945.72 = 314.23/x
  3. Step 3: Cross multiply
    631.30x = 945.72 × 314.23
  4. Step 4: Simplify right side
    631.30x = 297,173.60
  5. Step 5: Solve for x
    x = 297,173.60/631.30
  6. Step 6: Final answer
    x = 470.73

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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.