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Finding the Fourth Proportional to 503.74, 755.90 and 272.63

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Solution

The fourth proportional to 503.74, 755.90 and 272.63 is: 409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.74 : 755.90 = 272.63 : x
  2. Step 2: Convert to fraction form
    503.74/755.90 = 272.63/x
  3. Step 3: Cross multiply
    503.74x = 755.90 × 272.63
  4. Step 4: Simplify right side
    503.74x = 206,081.02
  5. Step 5: Solve for x
    x = 206,081.02/503.74
  6. Step 6: Final answer
    x = 409.10

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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.