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Finding the Fourth Proportional to 753.93, 1,134.97 and 539.01

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Solution

The fourth proportional to 753.93, 1,134.97 and 539.01 is: 811.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.93 : 1,134.97 = 539.01 : x
  2. Step 2: Convert to fraction form
    753.93/1,134.97 = 539.01/x
  3. Step 3: Cross multiply
    753.93x = 1,134.97 × 539.01
  4. Step 4: Simplify right side
    753.93x = 611,758.83
  5. Step 5: Solve for x
    x = 611,758.83/753.93
  6. Step 6: Final answer
    x = 811.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.