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Finding the Fourth Proportional to 908.94, 1,362.37 and 542.97

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Solution

The fourth proportional to 908.94, 1,362.37 and 542.97 is: 813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.94 : 1,362.37 = 542.97 : x
  2. Step 2: Convert to fraction form
    908.94/1,362.37 = 542.97/x
  3. Step 3: Cross multiply
    908.94x = 1,362.37 × 542.97
  4. Step 4: Simplify right side
    908.94x = 739,726.04
  5. Step 5: Solve for x
    x = 739,726.04/908.94
  6. Step 6: Final answer
    x = 813.83

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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.