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Finding the Fourth Proportional to 553.47, 763.77 and 301.38

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Solution

The fourth proportional to 553.47, 763.77 and 301.38 is: 415.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.47 : 763.77 = 301.38 : x
  2. Step 2: Convert to fraction form
    553.47/763.77 = 301.38/x
  3. Step 3: Cross multiply
    553.47x = 763.77 × 301.38
  4. Step 4: Simplify right side
    553.47x = 230,183.50
  5. Step 5: Solve for x
    x = 230,183.50/553.47
  6. Step 6: Final answer
    x = 415.90

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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.