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Finding the Fourth Proportional to 503.40, 754.44 and 272.34

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Solution

The fourth proportional to 503.40, 754.44 and 272.34 is: 408.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.40 : 754.44 = 272.34 : x
  2. Step 2: Convert to fraction form
    503.40/754.44 = 272.34/x
  3. Step 3: Cross multiply
    503.40x = 754.44 × 272.34
  4. Step 4: Simplify right side
    503.40x = 205,464.19
  5. Step 5: Solve for x
    x = 205,464.19/503.40
  6. Step 6: Final answer
    x = 408.15

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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.