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Finding the Fourth Proportional to 908.94, 1,363.26 and 360.92

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Solution

The fourth proportional to 908.94, 1,363.26 and 360.92 is: 541.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.94 : 1,363.26 = 360.92 : x
  2. Step 2: Convert to fraction form
    908.94/1,363.26 = 360.92/x
  3. Step 3: Cross multiply
    908.94x = 1,363.26 × 360.92
  4. Step 4: Simplify right side
    908.94x = 492,027.80
  5. Step 5: Solve for x
    x = 492,027.80/908.94
  6. Step 6: Final answer
    x = 541.32

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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.