Home / 727.31-1,091.05-240.35

Finding the Fourth Proportional to 727.31, 1,091.05 and 240.35

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Solution

The fourth proportional to 727.31, 1,091.05 and 240.35 is: 360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.31 : 1,091.05 = 240.35 : x
  2. Step 2: Convert to fraction form
    727.31/1,091.05 = 240.35/x
  3. Step 3: Cross multiply
    727.31x = 1,091.05 × 240.35
  4. Step 4: Simplify right side
    727.31x = 262,227.81
  5. Step 5: Solve for x
    x = 262,227.81/727.31
  6. Step 6: Final answer
    x = 360.54

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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.