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Finding the Fourth Proportional to 1,335.11, 2,002.43 and 360.99

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Solution

The fourth proportional to 1,335.11, 2,002.43 and 360.99 is: 541.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.11 : 2,002.43 = 360.99 : x
  2. Step 2: Convert to fraction form
    1,335.11/2,002.43 = 360.99/x
  3. Step 3: Cross multiply
    1,335.11x = 2,002.43 × 360.99
  4. Step 4: Simplify right side
    1,335.11x = 722,857.21
  5. Step 5: Solve for x
    x = 722,857.21/1,335.11
  6. Step 6: Final answer
    x = 541.42

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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.