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Finding the Fourth Proportional to 690.03, 1,034.79 and 227.73

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Solution

The fourth proportional to 690.03, 1,034.79 and 227.73 is: 341.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.03 : 1,034.79 = 227.73 : x
  2. Step 2: Convert to fraction form
    690.03/1,034.79 = 227.73/x
  3. Step 3: Cross multiply
    690.03x = 1,034.79 × 227.73
  4. Step 4: Simplify right side
    690.03x = 235,652.73
  5. Step 5: Solve for x
    x = 235,652.73/690.03
  6. Step 6: Final answer
    x = 341.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.