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Finding the Fourth Proportional to 2,291.91, 3,435.53 and 903.34

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Solution

The fourth proportional to 2,291.91, 3,435.53 and 903.34 is: 1,354.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.91 : 3,435.53 = 903.34 : x
  2. Step 2: Convert to fraction form
    2,291.91/3,435.53 = 903.34/x
  3. Step 3: Cross multiply
    2,291.91x = 3,435.53 × 903.34
  4. Step 4: Simplify right side
    2,291.91x = 3,103,437.20
  5. Step 5: Solve for x
    x = 3,103,437.20/2,291.91
  6. Step 6: Final answer
    x = 1,354.09

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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.