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Finding the Fourth Proportional to 377.79, 563.36 and 347.87

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Solution

The fourth proportional to 377.79, 563.36 and 347.87 is: 518.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.79 : 563.36 = 347.87 : x
  2. Step 2: Convert to fraction form
    377.79/563.36 = 347.87/x
  3. Step 3: Cross multiply
    377.79x = 563.36 × 347.87
  4. Step 4: Simplify right side
    377.79x = 195,976.04
  5. Step 5: Solve for x
    x = 195,976.04/377.79
  6. Step 6: Final answer
    x = 518.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.