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Finding the Fourth Proportional to 368.20, 508.10 and 202.39

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Solution

The fourth proportional to 368.20, 508.10 and 202.39 is: 279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.20 : 508.10 = 202.39 : x
  2. Step 2: Convert to fraction form
    368.20/508.10 = 202.39/x
  3. Step 3: Cross multiply
    368.20x = 508.10 × 202.39
  4. Step 4: Simplify right side
    368.20x = 102,832.08
  5. Step 5: Solve for x
    x = 102,832.08/368.20
  6. Step 6: Final answer
    x = 279.28

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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.