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Finding the Fourth Proportional to 605.22, 906.30 and 469.89

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Solution

The fourth proportional to 605.22, 906.30 and 469.89 is: 703.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.22 : 906.30 = 469.89 : x
  2. Step 2: Convert to fraction form
    605.22/906.30 = 469.89/x
  3. Step 3: Cross multiply
    605.22x = 906.30 × 469.89
  4. Step 4: Simplify right side
    605.22x = 425,861.31
  5. Step 5: Solve for x
    x = 425,861.31/605.22
  6. Step 6: Final answer
    x = 703.65

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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.