Home / 1,335.18-2,002.68-361.20

Finding the Fourth Proportional to 1,335.18, 2,002.68 and 361.20

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Solution

The fourth proportional to 1,335.18, 2,002.68 and 361.20 is: 541.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.18 : 2,002.68 = 361.20 : x
  2. Step 2: Convert to fraction form
    1,335.18/2,002.68 = 361.20/x
  3. Step 3: Cross multiply
    1,335.18x = 2,002.68 × 361.20
  4. Step 4: Simplify right side
    1,335.18x = 723,368.02
  5. Step 5: Solve for x
    x = 723,368.02/1,335.18
  6. Step 6: Final answer
    x = 541.78

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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.