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Finding the Fourth Proportional to 945.27, 1,419.27 and 672.81

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Solution

The fourth proportional to 945.27, 1,419.27 and 672.81 is: 1,010.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.27 : 1,419.27 = 672.81 : x
  2. Step 2: Convert to fraction form
    945.27/1,419.27 = 672.81/x
  3. Step 3: Cross multiply
    945.27x = 1,419.27 × 672.81
  4. Step 4: Simplify right side
    945.27x = 954,894.99
  5. Step 5: Solve for x
    x = 954,894.99/945.27
  6. Step 6: Final answer
    x = 1,010.18

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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.