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Finding the Fourth Proportional to 368.63, 508.89 and 251.22

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Solution

The fourth proportional to 368.63, 508.89 and 251.22 is: 346.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.63 : 508.89 = 251.22 : x
  2. Step 2: Convert to fraction form
    368.63/508.89 = 251.22/x
  3. Step 3: Cross multiply
    368.63x = 508.89 × 251.22
  4. Step 4: Simplify right side
    368.63x = 127,843.35
  5. Step 5: Solve for x
    x = 127,843.35/368.63
  6. Step 6: Final answer
    x = 346.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.