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Finding the Fourth Proportional to 611.10, 916.77 and 264.37

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Solution

The fourth proportional to 611.10, 916.77 and 264.37 is: 396.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.10 : 916.77 = 264.37 : x
  2. Step 2: Convert to fraction form
    611.10/916.77 = 264.37/x
  3. Step 3: Cross multiply
    611.10x = 916.77 × 264.37
  4. Step 4: Simplify right side
    611.10x = 242,367.99
  5. Step 5: Solve for x
    x = 242,367.99/611.10
  6. Step 6: Final answer
    x = 396.61

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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.