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Finding the Fourth Proportional to 609.91, 841.63 and 344.39

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Solution

The fourth proportional to 609.91, 841.63 and 344.39 is: 475.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.91 : 841.63 = 344.39 : x
  2. Step 2: Convert to fraction form
    609.91/841.63 = 344.39/x
  3. Step 3: Cross multiply
    609.91x = 841.63 × 344.39
  4. Step 4: Simplify right side
    609.91x = 289,843.89
  5. Step 5: Solve for x
    x = 289,843.89/609.91
  6. Step 6: Final answer
    x = 475.23

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.