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Finding the Fourth Proportional to 894.12, 1,233.40 and 672.68

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Solution

The fourth proportional to 894.12, 1,233.40 and 672.68 is: 927.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.12 : 1,233.40 = 672.68 : x
  2. Step 2: Convert to fraction form
    894.12/1,233.40 = 672.68/x
  3. Step 3: Cross multiply
    894.12x = 1,233.40 × 672.68
  4. Step 4: Simplify right side
    894.12x = 829,683.51
  5. Step 5: Solve for x
    x = 829,683.51/894.12
  6. Step 6: Final answer
    x = 927.93

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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.