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Finding the Fourth Proportional to 670.29, 925.02 and 371.55

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Solution

The fourth proportional to 670.29, 925.02 and 371.55 is: 512.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.29 : 925.02 = 371.55 : x
  2. Step 2: Convert to fraction form
    670.29/925.02 = 371.55/x
  3. Step 3: Cross multiply
    670.29x = 925.02 × 371.55
  4. Step 4: Simplify right side
    670.29x = 343,691.18
  5. Step 5: Solve for x
    x = 343,691.18/670.29
  6. Step 6: Final answer
    x = 512.75

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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.