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Finding the Fourth Proportional to 436.70, 655.26 and 274.52

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Solution

The fourth proportional to 436.70, 655.26 and 274.52 is: 411.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.70 : 655.26 = 274.52 : x
  2. Step 2: Convert to fraction form
    436.70/655.26 = 274.52/x
  3. Step 3: Cross multiply
    436.70x = 655.26 × 274.52
  4. Step 4: Simplify right side
    436.70x = 179,881.98
  5. Step 5: Solve for x
    x = 179,881.98/436.70
  6. Step 6: Final answer
    x = 411.91

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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.