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Finding the Fourth Proportional to 605.88, 909.09 and 317.25

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Solution

The fourth proportional to 605.88, 909.09 and 317.25 is: 476.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.88 : 909.09 = 317.25 : x
  2. Step 2: Convert to fraction form
    605.88/909.09 = 317.25/x
  3. Step 3: Cross multiply
    605.88x = 909.09 × 317.25
  4. Step 4: Simplify right side
    605.88x = 288,408.80
  5. Step 5: Solve for x
    x = 288,408.80/605.88
  6. Step 6: Final answer
    x = 476.02

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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.