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Finding the Fourth Proportional to 632.28, 948.42 and 343.66

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Solution

The fourth proportional to 632.28, 948.42 and 343.66 is: 515.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.28 : 948.42 = 343.66 : x
  2. Step 2: Convert to fraction form
    632.28/948.42 = 343.66/x
  3. Step 3: Cross multiply
    632.28x = 948.42 × 343.66
  4. Step 4: Simplify right side
    632.28x = 325,934.02
  5. Step 5: Solve for x
    x = 325,934.02/632.28
  6. Step 6: Final answer
    x = 515.49

Related Problems

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Half scale
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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.