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Finding the Fourth Proportional to 436.20, 653.71 and 251.19

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Solution

The fourth proportional to 436.20, 653.71 and 251.19 is: 376.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.20 : 653.71 = 251.19 : x
  2. Step 2: Convert to fraction form
    436.20/653.71 = 251.19/x
  3. Step 3: Cross multiply
    436.20x = 653.71 × 251.19
  4. Step 4: Simplify right side
    436.20x = 164,204.79
  5. Step 5: Solve for x
    x = 164,204.79/436.20
  6. Step 6: Final answer
    x = 376.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.