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Finding the Fourth Proportional to 632.64, 948.78 and 324.39

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Solution

The fourth proportional to 632.64, 948.78 and 324.39 is: 486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.64 : 948.78 = 324.39 : x
  2. Step 2: Convert to fraction form
    632.64/948.78 = 324.39/x
  3. Step 3: Cross multiply
    632.64x = 948.78 × 324.39
  4. Step 4: Simplify right side
    632.64x = 307,774.74
  5. Step 5: Solve for x
    x = 307,774.74/632.64
  6. Step 6: Final answer
    x = 486.49

Related Problems

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Double scale
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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.