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Finding the Fourth Proportional to 631.18, 945.99 and 448.19

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Solution

The fourth proportional to 631.18, 945.99 and 448.19 is: 671.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.18 : 945.99 = 448.19 : x
  2. Step 2: Convert to fraction form
    631.18/945.99 = 448.19/x
  3. Step 3: Cross multiply
    631.18x = 945.99 × 448.19
  4. Step 4: Simplify right side
    631.18x = 423,983.26
  5. Step 5: Solve for x
    x = 423,983.26/631.18
  6. Step 6: Final answer
    x = 671.73

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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.