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Finding the Fourth Proportional to 377.18, 565.41 and 120.50

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Solution

The fourth proportional to 377.18, 565.41 and 120.50 is: 180.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.18 : 565.41 = 120.50 : x
  2. Step 2: Convert to fraction form
    377.18/565.41 = 120.50/x
  3. Step 3: Cross multiply
    377.18x = 565.41 × 120.50
  4. Step 4: Simplify right side
    377.18x = 68,131.91
  5. Step 5: Solve for x
    x = 68,131.91/377.18
  6. Step 6: Final answer
    x = 180.63

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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.