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Finding the Fourth Proportional to 544.39, 751.24 and 311.50

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Solution

The fourth proportional to 544.39, 751.24 and 311.50 is: 429.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.39 : 751.24 = 311.50 : x
  2. Step 2: Convert to fraction form
    544.39/751.24 = 311.50/x
  3. Step 3: Cross multiply
    544.39x = 751.24 × 311.50
  4. Step 4: Simplify right side
    544.39x = 234,011.26
  5. Step 5: Solve for x
    x = 234,011.26/544.39
  6. Step 6: Final answer
    x = 429.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.