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Finding the Fourth Proportional to 193.58, 266.88 and 158.57

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Solution

The fourth proportional to 193.58, 266.88 and 158.57 is: 218.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.58 : 266.88 = 158.57 : x
  2. Step 2: Convert to fraction form
    193.58/266.88 = 158.57/x
  3. Step 3: Cross multiply
    193.58x = 266.88 × 158.57
  4. Step 4: Simplify right side
    193.58x = 42,317.83
  5. Step 5: Solve for x
    x = 42,317.83/193.58
  6. Step 6: Final answer
    x = 218.61

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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.