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Finding the Fourth Proportional to 666.02, 919.03 and 371.31

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Solution

The fourth proportional to 666.02, 919.03 and 371.31 is: 512.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.02 : 919.03 = 371.31 : x
  2. Step 2: Convert to fraction form
    666.02/919.03 = 371.31/x
  3. Step 3: Cross multiply
    666.02x = 919.03 × 371.31
  4. Step 4: Simplify right side
    666.02x = 341,245.03
  5. Step 5: Solve for x
    x = 341,245.03/666.02
  6. Step 6: Final answer
    x = 512.36

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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.