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Finding the Fourth Proportional to 720.07, 994.20 and 573.05

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Solution

The fourth proportional to 720.07, 994.20 and 573.05 is: 791.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.07 : 994.20 = 573.05 : x
  2. Step 2: Convert to fraction form
    720.07/994.20 = 573.05/x
  3. Step 3: Cross multiply
    720.07x = 994.20 × 573.05
  4. Step 4: Simplify right side
    720.07x = 569,726.31
  5. Step 5: Solve for x
    x = 569,726.31/720.07
  6. Step 6: Final answer
    x = 791.21

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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.