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Finding the Fourth Proportional to 621.97, 932.32 and 210.99

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Solution

The fourth proportional to 621.97, 932.32 and 210.99 is: 316.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.97 : 932.32 = 210.99 : x
  2. Step 2: Convert to fraction form
    621.97/932.32 = 210.99/x
  3. Step 3: Cross multiply
    621.97x = 932.32 × 210.99
  4. Step 4: Simplify right side
    621.97x = 196,710.20
  5. Step 5: Solve for x
    x = 196,710.20/621.97
  6. Step 6: Final answer
    x = 316.27

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.