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Finding the Fourth Proportional to 251.08, 374.77 and 216.45

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Solution

The fourth proportional to 251.08, 374.77 and 216.45 is: 323.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.08 : 374.77 = 216.45 : x
  2. Step 2: Convert to fraction form
    251.08/374.77 = 216.45/x
  3. Step 3: Cross multiply
    251.08x = 374.77 × 216.45
  4. Step 4: Simplify right side
    251.08x = 81,118.97
  5. Step 5: Solve for x
    x = 81,118.97/251.08
  6. Step 6: Final answer
    x = 323.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.