Home / 727.12-1,090.38-294.16

Finding the Fourth Proportional to 727.12, 1,090.38 and 294.16

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Solution

The fourth proportional to 727.12, 1,090.38 and 294.16 is: 441.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.12 : 1,090.38 = 294.16 : x
  2. Step 2: Convert to fraction form
    727.12/1,090.38 = 294.16/x
  3. Step 3: Cross multiply
    727.12x = 1,090.38 × 294.16
  4. Step 4: Simplify right side
    727.12x = 320,746.18
  5. Step 5: Solve for x
    x = 320,746.18/727.12
  6. Step 6: Final answer
    x = 441.12

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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.