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Finding the Fourth Proportional to 727.23, 1,090.38 and 480.17

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Solution

The fourth proportional to 727.23, 1,090.38 and 480.17 is: 719.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.23 : 1,090.38 = 480.17 : x
  2. Step 2: Convert to fraction form
    727.23/1,090.38 = 480.17/x
  3. Step 3: Cross multiply
    727.23x = 1,090.38 × 480.17
  4. Step 4: Simplify right side
    727.23x = 523,562.31
  5. Step 5: Solve for x
    x = 523,562.31/727.23
  6. Step 6: Final answer
    x = 719.94

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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.