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Finding the Fourth Proportional to 544.95, 751.61 and 393.48

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Solution

The fourth proportional to 544.95, 751.61 and 393.48 is: 542.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.95 : 751.61 = 393.48 : x
  2. Step 2: Convert to fraction form
    544.95/751.61 = 393.48/x
  3. Step 3: Cross multiply
    544.95x = 751.61 × 393.48
  4. Step 4: Simplify right side
    544.95x = 295,744.49
  5. Step 5: Solve for x
    x = 295,744.49/544.95
  6. Step 6: Final answer
    x = 542.70

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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.