Home / 628.83-943.24-355.15

Finding the Fourth Proportional to 628.83, 943.24 and 355.15

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Solution

The fourth proportional to 628.83, 943.24 and 355.15 is: 532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.83 : 943.24 = 355.15 : x
  2. Step 2: Convert to fraction form
    628.83/943.24 = 355.15/x
  3. Step 3: Cross multiply
    628.83x = 943.24 × 355.15
  4. Step 4: Simplify right side
    628.83x = 334,992.57
  5. Step 5: Solve for x
    x = 334,992.57/628.83
  6. Step 6: Final answer
    x = 532.73

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Double scale
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Similar ratio
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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.