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Finding the Fourth Proportional to 553.72, 763.86 and 367.15

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Solution

The fourth proportional to 553.72, 763.86 and 367.15 is: 506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.72 : 763.86 = 367.15 : x
  2. Step 2: Convert to fraction form
    553.72/763.86 = 367.15/x
  3. Step 3: Cross multiply
    553.72x = 763.86 × 367.15
  4. Step 4: Simplify right side
    553.72x = 280,447.38
  5. Step 5: Solve for x
    x = 280,447.38/553.72
  6. Step 6: Final answer
    x = 506.48

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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.