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Finding the Fourth Proportional to 633.38, 874.06 and 357.38

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Solution

The fourth proportional to 633.38, 874.06 and 357.38 is: 493.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.38 : 874.06 = 357.38 : x
  2. Step 2: Convert to fraction form
    633.38/874.06 = 357.38/x
  3. Step 3: Cross multiply
    633.38x = 874.06 × 357.38
  4. Step 4: Simplify right side
    633.38x = 312,371.56
  5. Step 5: Solve for x
    x = 312,371.56/633.38
  6. Step 6: Final answer
    x = 493.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.