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Finding the Fourth Proportional to 544.40, 751.28 and 295.72

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Solution

The fourth proportional to 544.40, 751.28 and 295.72 is: 408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.40 : 751.28 = 295.72 : x
  2. Step 2: Convert to fraction form
    544.40/751.28 = 295.72/x
  3. Step 3: Cross multiply
    544.40x = 751.28 × 295.72
  4. Step 4: Simplify right side
    544.40x = 222,170.42
  5. Step 5: Solve for x
    x = 222,170.42/544.40
  6. Step 6: Final answer
    x = 408.10

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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.