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Finding the Fourth Proportional to 719.28, 993.34 and 573.02

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Solution

The fourth proportional to 719.28, 993.34 and 573.02 is: 791.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.28 : 993.34 = 573.02 : x
  2. Step 2: Convert to fraction form
    719.28/993.34 = 573.02/x
  3. Step 3: Cross multiply
    719.28x = 993.34 × 573.02
  4. Step 4: Simplify right side
    719.28x = 569,203.69
  5. Step 5: Solve for x
    x = 569,203.69/719.28
  6. Step 6: Final answer
    x = 791.35

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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.