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Finding the Fourth Proportional to 1,361.48, 2,040.32 and 539.26

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Solution

The fourth proportional to 1,361.48, 2,040.32 and 539.26 is: 808.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361.48 : 2,040.32 = 539.26 : x
  2. Step 2: Convert to fraction form
    1,361.48/2,040.32 = 539.26/x
  3. Step 3: Cross multiply
    1,361.48x = 2,040.32 × 539.26
  4. Step 4: Simplify right side
    1,361.48x = 1,100,259.21
  5. Step 5: Solve for x
    x = 1,100,259.21/1,361.48
  6. Step 6: Final answer
    x = 808.14

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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.