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Finding the Fourth Proportional to 377.59, 520.50 and 279.19

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Solution

The fourth proportional to 377.59, 520.50 and 279.19 is: 384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.59 : 520.50 = 279.19 : x
  2. Step 2: Convert to fraction form
    377.59/520.50 = 279.19/x
  3. Step 3: Cross multiply
    377.59x = 520.50 × 279.19
  4. Step 4: Simplify right side
    377.59x = 145,318.40
  5. Step 5: Solve for x
    x = 145,318.40/377.59
  6. Step 6: Final answer
    x = 384.86

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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.