Home / 727.48-1,090.50-240.40

Finding the Fourth Proportional to 727.48, 1,090.50 and 240.40

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Solution

The fourth proportional to 727.48, 1,090.50 and 240.40 is: 360.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.48 : 1,090.50 = 240.40 : x
  2. Step 2: Convert to fraction form
    727.48/1,090.50 = 240.40/x
  3. Step 3: Cross multiply
    727.48x = 1,090.50 × 240.40
  4. Step 4: Simplify right side
    727.48x = 262,156.20
  5. Step 5: Solve for x
    x = 262,156.20/727.48
  6. Step 6: Final answer
    x = 360.36

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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.