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Finding the Fourth Proportional to 380.50, 527.49 and 359.71

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Solution

The fourth proportional to 380.50, 527.49 and 359.71 is: 498.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.50 : 527.49 = 359.71 : x
  2. Step 2: Convert to fraction form
    380.50/527.49 = 359.71/x
  3. Step 3: Cross multiply
    380.50x = 527.49 × 359.71
  4. Step 4: Simplify right side
    380.50x = 189,741.63
  5. Step 5: Solve for x
    x = 189,741.63/380.50
  6. Step 6: Final answer
    x = 498.66

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.