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Finding the Fourth Proportional to 727.57, 1,090.99 and 362.56

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Solution

The fourth proportional to 727.57, 1,090.99 and 362.56 is: 543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.57 : 1,090.99 = 362.56 : x
  2. Step 2: Convert to fraction form
    727.57/1,090.99 = 362.56/x
  3. Step 3: Cross multiply
    727.57x = 1,090.99 × 362.56
  4. Step 4: Simplify right side
    727.57x = 395,549.33
  5. Step 5: Solve for x
    x = 395,549.33/727.57
  6. Step 6: Final answer
    x = 543.66

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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.