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Finding the Fourth Proportional to 550.90, 826.42 and 290.91

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Solution

The fourth proportional to 550.90, 826.42 and 290.91 is: 436.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.90 : 826.42 = 290.91 : x
  2. Step 2: Convert to fraction form
    550.90/826.42 = 290.91/x
  3. Step 3: Cross multiply
    550.90x = 826.42 × 290.91
  4. Step 4: Simplify right side
    550.90x = 240,417.43
  5. Step 5: Solve for x
    x = 240,417.43/550.90
  6. Step 6: Final answer
    x = 436.41

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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.