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Finding the Fourth Proportional to 368.82, 508.78 and 275.37

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Solution

The fourth proportional to 368.82, 508.78 and 275.37 is: 379.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.82 : 508.78 = 275.37 : x
  2. Step 2: Convert to fraction form
    368.82/508.78 = 275.37/x
  3. Step 3: Cross multiply
    368.82x = 508.78 × 275.37
  4. Step 4: Simplify right side
    368.82x = 140,101.18
  5. Step 5: Solve for x
    x = 140,101.18/368.82
  6. Step 6: Final answer
    x = 379.86

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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.