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Finding the Fourth Proportional to 637.97, 957.05 and 205.13

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Solution

The fourth proportional to 637.97, 957.05 and 205.13 is: 307.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.97 : 957.05 = 205.13 : x
  2. Step 2: Convert to fraction form
    637.97/957.05 = 205.13/x
  3. Step 3: Cross multiply
    637.97x = 957.05 × 205.13
  4. Step 4: Simplify right side
    637.97x = 196,319.67
  5. Step 5: Solve for x
    x = 196,319.67/637.97
  6. Step 6: Final answer
    x = 307.73

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Double scale
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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.