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Finding the Fourth Proportional to 948.22, 1,420.73 and 672.94

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Solution

The fourth proportional to 948.22, 1,420.73 and 672.94 is: 1,008.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.22 : 1,420.73 = 672.94 : x
  2. Step 2: Convert to fraction form
    948.22/1,420.73 = 672.94/x
  3. Step 3: Cross multiply
    948.22x = 1,420.73 × 672.94
  4. Step 4: Simplify right side
    948.22x = 956,062.68
  5. Step 5: Solve for x
    x = 956,062.68/948.22
  6. Step 6: Final answer
    x = 1,008.27

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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.