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Finding the Fourth Proportional to 958.77, 1,323.03 and 539.19

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Solution

The fourth proportional to 958.77, 1,323.03 and 539.19 is: 744.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.77 : 1,323.03 = 539.19 : x
  2. Step 2: Convert to fraction form
    958.77/1,323.03 = 539.19/x
  3. Step 3: Cross multiply
    958.77x = 1,323.03 × 539.19
  4. Step 4: Simplify right side
    958.77x = 713,366.57
  5. Step 5: Solve for x
    x = 713,366.57/958.77
  6. Step 6: Final answer
    x = 744.04

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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.