Home / 1,335.12-2,002.55-361.10

Finding the Fourth Proportional to 1,335.12, 2,002.55 and 361.10

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Solution

The fourth proportional to 1,335.12, 2,002.55 and 361.10 is: 541.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.12 : 2,002.55 = 361.10 : x
  2. Step 2: Convert to fraction form
    1,335.12/2,002.55 = 361.10/x
  3. Step 3: Cross multiply
    1,335.12x = 2,002.55 × 361.10
  4. Step 4: Simplify right side
    1,335.12x = 723,108.99
  5. Step 5: Solve for x
    x = 723,108.99/1,335.12
  6. Step 6: Final answer
    x = 541.61

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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.