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Finding the Fourth Proportional to 611.27, 915.68 and 367.65

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Solution

The fourth proportional to 611.27, 915.68 and 367.65 is: 550.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.27 : 915.68 = 367.65 : x
  2. Step 2: Convert to fraction form
    611.27/915.68 = 367.65/x
  3. Step 3: Cross multiply
    611.27x = 915.68 × 367.65
  4. Step 4: Simplify right side
    611.27x = 336,647.91
  5. Step 5: Solve for x
    x = 336,647.91/611.27
  6. Step 6: Final answer
    x = 550.74

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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.