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Finding the Fourth Proportional to 377.87, 569.03 and 339.80

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Solution

The fourth proportional to 377.87, 569.03 and 339.80 is: 511.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.87 : 569.03 = 339.80 : x
  2. Step 2: Convert to fraction form
    377.87/569.03 = 339.80/x
  3. Step 3: Cross multiply
    377.87x = 569.03 × 339.80
  4. Step 4: Simplify right side
    377.87x = 193,351.85
  5. Step 5: Solve for x
    x = 193,351.85/377.87
  6. Step 6: Final answer
    x = 511.70

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.