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Finding the Fourth Proportional to 404, 605.54 and 172.82

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Solution

The fourth proportional to 404, 605.54 and 172.82 is: 259.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    404 : 605.54 = 172.82 : x
  2. Step 2: Convert to fraction form
    404/605.54 = 172.82/x
  3. Step 3: Cross multiply
    404x = 605.54 × 172.82
  4. Step 4: Simplify right side
    404x = 104,649.42
  5. Step 5: Solve for x
    x = 104,649.42/404
  6. Step 6: Final answer
    x = 259.03

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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.