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Finding the Fourth Proportional to 609.09, 914.40 and 335.40

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Solution

The fourth proportional to 609.09, 914.40 and 335.40 is: 503.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.09 : 914.40 = 335.40 : x
  2. Step 2: Convert to fraction form
    609.09/914.40 = 335.40/x
  3. Step 3: Cross multiply
    609.09x = 914.40 × 335.40
  4. Step 4: Simplify right side
    609.09x = 306,689.76
  5. Step 5: Solve for x
    x = 306,689.76/609.09
  6. Step 6: Final answer
    x = 503.52

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Double scale
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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.