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Finding the Fourth Proportional to 544.40, 751.08 and 308.32

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Solution

The fourth proportional to 544.40, 751.08 and 308.32 is: 425.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.40 : 751.08 = 308.32 : x
  2. Step 2: Convert to fraction form
    544.40/751.08 = 308.32/x
  3. Step 3: Cross multiply
    544.40x = 751.08 × 308.32
  4. Step 4: Simplify right side
    544.40x = 231,573.20
  5. Step 5: Solve for x
    x = 231,573.20/544.40
  6. Step 6: Final answer
    x = 425.38

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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.