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Finding the Fourth Proportional to 893.20, 1,233.03 and 672.23

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Solution

The fourth proportional to 893.20, 1,233.03 and 672.23 is: 927.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.20 : 1,233.03 = 672.23 : x
  2. Step 2: Convert to fraction form
    893.20/1,233.03 = 672.23/x
  3. Step 3: Cross multiply
    893.20x = 1,233.03 × 672.23
  4. Step 4: Simplify right side
    893.20x = 828,879.76
  5. Step 5: Solve for x
    x = 828,879.76/893.20
  6. Step 6: Final answer
    x = 927.99

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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.