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Finding the Fourth Proportional to 605.08, 907.64 and 220.44

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Solution

The fourth proportional to 605.08, 907.64 and 220.44 is: 330.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.08 : 907.64 = 220.44 : x
  2. Step 2: Convert to fraction form
    605.08/907.64 = 220.44/x
  3. Step 3: Cross multiply
    605.08x = 907.64 × 220.44
  4. Step 4: Simplify right side
    605.08x = 200,080.16
  5. Step 5: Solve for x
    x = 200,080.16/605.08
  6. Step 6: Final answer
    x = 330.67

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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.