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Finding the Fourth Proportional to 719.55, 991.85 and 588.33

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Solution

The fourth proportional to 719.55, 991.85 and 588.33 is: 810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.55 : 991.85 = 588.33 : x
  2. Step 2: Convert to fraction form
    719.55/991.85 = 588.33/x
  3. Step 3: Cross multiply
    719.55x = 991.85 × 588.33
  4. Step 4: Simplify right side
    719.55x = 583,532.17
  5. Step 5: Solve for x
    x = 583,532.17/719.55
  6. Step 6: Final answer
    x = 810.97

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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.