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Finding the Fourth Proportional to 632.80, 948.90 and 324.49

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Solution

The fourth proportional to 632.80, 948.90 and 324.49 is: 486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.80 : 948.90 = 324.49 : x
  2. Step 2: Convert to fraction form
    632.80/948.90 = 324.49/x
  3. Step 3: Cross multiply
    632.80x = 948.90 × 324.49
  4. Step 4: Simplify right side
    632.80x = 307,908.56
  5. Step 5: Solve for x
    x = 307,908.56/632.80
  6. Step 6: Final answer
    x = 486.58

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Double scale
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Similar ratio
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1.5x scale

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.