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Finding the Fourth Proportional to 205.41, 307.38 and 118.50

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Solution

The fourth proportional to 205.41, 307.38 and 118.50 is: 177.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.41 : 307.38 = 118.50 : x
  2. Step 2: Convert to fraction form
    205.41/307.38 = 118.50/x
  3. Step 3: Cross multiply
    205.41x = 307.38 × 118.50
  4. Step 4: Simplify right side
    205.41x = 36,424.53
  5. Step 5: Solve for x
    x = 36,424.53/205.41
  6. Step 6: Final answer
    x = 177.33

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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.