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Finding the Fourth Proportional to 371.91, 556.91 and 310.89

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Solution

The fourth proportional to 371.91, 556.91 and 310.89 is: 465.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.91 : 556.91 = 310.89 : x
  2. Step 2: Convert to fraction form
    371.91/556.91 = 310.89/x
  3. Step 3: Cross multiply
    371.91x = 556.91 × 310.89
  4. Step 4: Simplify right side
    371.91x = 173,135.74
  5. Step 5: Solve for x
    x = 173,135.74/371.91
  6. Step 6: Final answer
    x = 465.54

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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.