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Finding the Fourth Proportional to 727.04, 1,089.12 and 722.24

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Solution

The fourth proportional to 727.04, 1,089.12 and 722.24 is: 1,081.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.04 : 1,089.12 = 722.24 : x
  2. Step 2: Convert to fraction form
    727.04/1,089.12 = 722.24/x
  3. Step 3: Cross multiply
    727.04x = 1,089.12 × 722.24
  4. Step 4: Simplify right side
    727.04x = 786,606.03
  5. Step 5: Solve for x
    x = 786,606.03/727.04
  6. Step 6: Final answer
    x = 1,081.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.