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Finding the Fourth Proportional to 666.01, 919.10 and 371.29

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Solution

The fourth proportional to 666.01, 919.10 and 371.29 is: 512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.01 : 919.10 = 371.29 : x
  2. Step 2: Convert to fraction form
    666.01/919.10 = 371.29/x
  3. Step 3: Cross multiply
    666.01x = 919.10 × 371.29
  4. Step 4: Simplify right side
    666.01x = 341,250.90
  5. Step 5: Solve for x
    x = 341,250.90/666.01
  6. Step 6: Final answer
    x = 512.38

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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.