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Finding the Fourth Proportional to 410.94, 616.26 and 289.26

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Solution

The fourth proportional to 410.94, 616.26 and 289.26 is: 433.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.94 : 616.26 = 289.26 : x
  2. Step 2: Convert to fraction form
    410.94/616.26 = 289.26/x
  3. Step 3: Cross multiply
    410.94x = 616.26 × 289.26
  4. Step 4: Simplify right side
    410.94x = 178,259.37
  5. Step 5: Solve for x
    x = 178,259.37/410.94
  6. Step 6: Final answer
    x = 433.78

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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.