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Finding the Fourth Proportional to 544.36, 754.76 and 515.20

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Solution

The fourth proportional to 544.36, 754.76 and 515.20 is: 714.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.36 : 754.76 = 515.20 : x
  2. Step 2: Convert to fraction form
    544.36/754.76 = 515.20/x
  3. Step 3: Cross multiply
    544.36x = 754.76 × 515.20
  4. Step 4: Simplify right side
    544.36x = 388,852.35
  5. Step 5: Solve for x
    x = 388,852.35/544.36
  6. Step 6: Final answer
    x = 714.33

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.