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Finding the Fourth Proportional to 609, 913.04 and 442.24

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Solution

The fourth proportional to 609, 913.04 and 442.24 is: 663.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    609 : 913.04 = 442.24 : x
  2. Step 2: Convert to fraction form
    609/913.04 = 442.24/x
  3. Step 3: Cross multiply
    609x = 913.04 × 442.24
  4. Step 4: Simplify right side
    609x = 403,782.81
  5. Step 5: Solve for x
    x = 403,782.81/609
  6. Step 6: Final answer
    x = 663.03

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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.