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Finding the Fourth Proportional to 666.03, 919.12 and 371.34

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Solution

The fourth proportional to 666.03, 919.12 and 371.34 is: 512.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.03 : 919.12 = 371.34 : x
  2. Step 2: Convert to fraction form
    666.03/919.12 = 371.34/x
  3. Step 3: Cross multiply
    666.03x = 919.12 × 371.34
  4. Step 4: Simplify right side
    666.03x = 341,306.02
  5. Step 5: Solve for x
    x = 341,306.02/666.03
  6. Step 6: Final answer
    x = 512.45

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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.