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Finding the Fourth Proportional to 550.11, 759.01 and 328.90

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Solution

The fourth proportional to 550.11, 759.01 and 328.90 is: 453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.11 : 759.01 = 328.90 : x
  2. Step 2: Convert to fraction form
    550.11/759.01 = 328.90/x
  3. Step 3: Cross multiply
    550.11x = 759.01 × 328.90
  4. Step 4: Simplify right side
    550.11x = 249,639.38
  5. Step 5: Solve for x
    x = 249,639.38/550.11
  6. Step 6: Final answer
    x = 453.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.