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Finding the Fourth Proportional to 670.49, 925.25 and 371.75

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Solution

The fourth proportional to 670.49, 925.25 and 371.75 is: 513.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.49 : 925.25 = 371.75 : x
  2. Step 2: Convert to fraction form
    670.49/925.25 = 371.75/x
  3. Step 3: Cross multiply
    670.49x = 925.25 × 371.75
  4. Step 4: Simplify right side
    670.49x = 343,959.03
  5. Step 5: Solve for x
    x = 343,959.03/670.49
  6. Step 6: Final answer
    x = 513.00

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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.