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Finding the Fourth Proportional to 730.85, 999.63 and 719.51

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Solution

The fourth proportional to 730.85, 999.63 and 719.51 is: 984.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.85 : 999.63 = 719.51 : x
  2. Step 2: Convert to fraction form
    730.85/999.63 = 719.51/x
  3. Step 3: Cross multiply
    730.85x = 999.63 × 719.51
  4. Step 4: Simplify right side
    730.85x = 719,238.78
  5. Step 5: Solve for x
    x = 719,238.78/730.85
  6. Step 6: Final answer
    x = 984.12

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.