Home / 727.06-1,090.79-316.23

Finding the Fourth Proportional to 727.06, 1,090.79 and 316.23

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Solution

The fourth proportional to 727.06, 1,090.79 and 316.23 is: 474.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.06 : 1,090.79 = 316.23 : x
  2. Step 2: Convert to fraction form
    727.06/1,090.79 = 316.23/x
  3. Step 3: Cross multiply
    727.06x = 1,090.79 × 316.23
  4. Step 4: Simplify right side
    727.06x = 344,938.94
  5. Step 5: Solve for x
    x = 344,938.94/727.06
  6. Step 6: Final answer
    x = 474.43

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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.