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Finding the Fourth Proportional to 550.51, 826 and 290.45

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Solution

The fourth proportional to 550.51, 826 and 290.45 is: 435.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.51 : 826 = 290.45 : x
  2. Step 2: Convert to fraction form
    550.51/826 = 290.45/x
  3. Step 3: Cross multiply
    550.51x = 826 × 290.45
  4. Step 4: Simplify right side
    550.51x = 239,911.70
  5. Step 5: Solve for x
    x = 239,911.70/550.51
  6. Step 6: Final answer
    x = 435.80

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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.