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Finding the Fourth Proportional to 622.99, 934.39 and 212.14

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Solution

The fourth proportional to 622.99, 934.39 and 212.14 is: 318.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.99 : 934.39 = 212.14 : x
  2. Step 2: Convert to fraction form
    622.99/934.39 = 212.14/x
  3. Step 3: Cross multiply
    622.99x = 934.39 × 212.14
  4. Step 4: Simplify right side
    622.99x = 198,221.49
  5. Step 5: Solve for x
    x = 198,221.49/622.99
  6. Step 6: Final answer
    x = 318.18

Related Problems

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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.