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Finding the Fourth Proportional to 2,290.28, 3,435.33 and 903.20

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Solution

The fourth proportional to 2,290.28, 3,435.33 and 903.20 is: 1,354.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.28 : 3,435.33 = 903.20 : x
  2. Step 2: Convert to fraction form
    2,290.28/3,435.33 = 903.20/x
  3. Step 3: Cross multiply
    2,290.28x = 3,435.33 × 903.20
  4. Step 4: Simplify right side
    2,290.28x = 3,102,790.06
  5. Step 5: Solve for x
    x = 3,102,790.06/2,290.28
  6. Step 6: Final answer
    x = 1,354.76

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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.