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Finding the Fourth Proportional to 720.76, 994.20 and 544

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Solution

The fourth proportional to 720.76, 994.20 and 544 is: 750.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.76 : 994.20 = 544 : x
  2. Step 2: Convert to fraction form
    720.76/994.20 = 544/x
  3. Step 3: Cross multiply
    720.76x = 994.20 × 544
  4. Step 4: Simplify right side
    720.76x = 540,844.80
  5. Step 5: Solve for x
    x = 540,844.80/720.76
  6. Step 6: Final answer
    x = 750.38

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1.5x scale

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.