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Finding the Fourth Proportional to 609.06, 913.38 and 219.06

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Solution

The fourth proportional to 609.06, 913.38 and 219.06 is: 328.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.06 : 913.38 = 219.06 : x
  2. Step 2: Convert to fraction form
    609.06/913.38 = 219.06/x
  3. Step 3: Cross multiply
    609.06x = 913.38 × 219.06
  4. Step 4: Simplify right side
    609.06x = 200,085.02
  5. Step 5: Solve for x
    x = 200,085.02/609.06
  6. Step 6: Final answer
    x = 328.51

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1.5x scale

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.