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Finding the Fourth Proportional to 720.97, 995.52 and 588.21

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Solution

The fourth proportional to 720.97, 995.52 and 588.21 is: 812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.97 : 995.52 = 588.21 : x
  2. Step 2: Convert to fraction form
    720.97/995.52 = 588.21/x
  3. Step 3: Cross multiply
    720.97x = 995.52 × 588.21
  4. Step 4: Simplify right side
    720.97x = 585,574.82
  5. Step 5: Solve for x
    x = 585,574.82/720.97
  6. Step 6: Final answer
    x = 812.20

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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.