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Finding the Fourth Proportional to 606.98, 836.70 and 397.13

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Solution

The fourth proportional to 606.98, 836.70 and 397.13 is: 547.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.98 : 836.70 = 397.13 : x
  2. Step 2: Convert to fraction form
    606.98/836.70 = 397.13/x
  3. Step 3: Cross multiply
    606.98x = 836.70 × 397.13
  4. Step 4: Simplify right side
    606.98x = 332,274.49
  5. Step 5: Solve for x
    x = 332,274.49/606.98
  6. Step 6: Final answer
    x = 547.43

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.