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Finding the Fourth Proportional to 611.11, 916.36 and 302.61

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Solution

The fourth proportional to 611.11, 916.36 and 302.61 is: 453.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.11 : 916.36 = 302.61 : x
  2. Step 2: Convert to fraction form
    611.11/916.36 = 302.61/x
  3. Step 3: Cross multiply
    611.11x = 916.36 × 302.61
  4. Step 4: Simplify right side
    611.11x = 277,299.70
  5. Step 5: Solve for x
    x = 277,299.70/611.11
  6. Step 6: Final answer
    x = 453.76

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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.