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Finding the Fourth Proportional to 377.56, 519.78 and 328.15

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Solution

The fourth proportional to 377.56, 519.78 and 328.15 is: 451.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.56 : 519.78 = 328.15 : x
  2. Step 2: Convert to fraction form
    377.56/519.78 = 328.15/x
  3. Step 3: Cross multiply
    377.56x = 519.78 × 328.15
  4. Step 4: Simplify right side
    377.56x = 170,565.81
  5. Step 5: Solve for x
    x = 170,565.81/377.56
  6. Step 6: Final answer
    x = 451.76

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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.