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Finding the Fourth Proportional to 606.81, 837.18 and 397.11

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Solution

The fourth proportional to 606.81, 837.18 and 397.11 is: 547.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.81 : 837.18 = 397.11 : x
  2. Step 2: Convert to fraction form
    606.81/837.18 = 397.11/x
  3. Step 3: Cross multiply
    606.81x = 837.18 × 397.11
  4. Step 4: Simplify right side
    606.81x = 332,446.38
  5. Step 5: Solve for x
    x = 332,446.38/606.81
  6. Step 6: Final answer
    x = 547.86

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.