Home / 1,335.40-2,002.92-361.60

Finding the Fourth Proportional to 1,335.40, 2,002.92 and 361.60

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Solution

The fourth proportional to 1,335.40, 2,002.92 and 361.60 is: 542.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.40 : 2,002.92 = 361.60 : x
  2. Step 2: Convert to fraction form
    1,335.40/2,002.92 = 361.60/x
  3. Step 3: Cross multiply
    1,335.40x = 2,002.92 × 361.60
  4. Step 4: Simplify right side
    1,335.40x = 724,255.87
  5. Step 5: Solve for x
    x = 724,255.87/1,335.40
  6. Step 6: Final answer
    x = 542.35

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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.