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Finding the Fourth Proportional to 541.87, 812.95 and 278.44

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Solution

The fourth proportional to 541.87, 812.95 and 278.44 is: 417.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.87 : 812.95 = 278.44 : x
  2. Step 2: Convert to fraction form
    541.87/812.95 = 278.44/x
  3. Step 3: Cross multiply
    541.87x = 812.95 × 278.44
  4. Step 4: Simplify right side
    541.87x = 226,355.07
  5. Step 5: Solve for x
    x = 226,355.07/541.87
  6. Step 6: Final answer
    x = 417.73

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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.