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Finding the Fourth Proportional to 377.17, 520.45 and 227.77

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Solution

The fourth proportional to 377.17, 520.45 and 227.77 is: 314.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.17 : 520.45 = 227.77 : x
  2. Step 2: Convert to fraction form
    377.17/520.45 = 227.77/x
  3. Step 3: Cross multiply
    377.17x = 520.45 × 227.77
  4. Step 4: Simplify right side
    377.17x = 118,541.03
  5. Step 5: Solve for x
    x = 118,541.03/377.17
  6. Step 6: Final answer
    x = 314.29

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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.