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Finding the Fourth Proportional to 606.39, 836.78 and 344.40

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Solution

The fourth proportional to 606.39, 836.78 and 344.40 is: 475.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.39 : 836.78 = 344.40 : x
  2. Step 2: Convert to fraction form
    606.39/836.78 = 344.40/x
  3. Step 3: Cross multiply
    606.39x = 836.78 × 344.40
  4. Step 4: Simplify right side
    606.39x = 288,187.03
  5. Step 5: Solve for x
    x = 288,187.03/606.39
  6. Step 6: Final answer
    x = 475.25

Related Problems

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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.