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Finding the Fourth Proportional to 606.68, 837.21 and 397.20

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Solution

The fourth proportional to 606.68, 837.21 and 397.20 is: 548.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.68 : 837.21 = 397.20 : x
  2. Step 2: Convert to fraction form
    606.68/837.21 = 397.20/x
  3. Step 3: Cross multiply
    606.68x = 837.21 × 397.20
  4. Step 4: Simplify right side
    606.68x = 332,542.21
  5. Step 5: Solve for x
    x = 332,542.21/606.68
  6. Step 6: Final answer
    x = 548.14

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.