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Finding the Fourth Proportional to 727.22, 1,086.20 and 630.02

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Solution

The fourth proportional to 727.22, 1,086.20 and 630.02 is: 941.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.22 : 1,086.20 = 630.02 : x
  2. Step 2: Convert to fraction form
    727.22/1,086.20 = 630.02/x
  3. Step 3: Cross multiply
    727.22x = 1,086.20 × 630.02
  4. Step 4: Simplify right side
    727.22x = 684,324.57
  5. Step 5: Solve for x
    x = 684,324.57/727.22
  6. Step 6: Final answer
    x = 941.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.