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Finding the Fourth Proportional to 903.94, 1,353.68 and 672.54

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Solution

The fourth proportional to 903.94, 1,353.68 and 672.54 is: 1,007.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.94 : 1,353.68 = 672.54 : x
  2. Step 2: Convert to fraction form
    903.94/1,353.68 = 672.54/x
  3. Step 3: Cross multiply
    903.94x = 1,353.68 × 672.54
  4. Step 4: Simplify right side
    903.94x = 910,403.95
  5. Step 5: Solve for x
    x = 910,403.95/903.94
  6. Step 6: Final answer
    x = 1,007.15

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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.