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Finding the Fourth Proportional to 223.93, 308.95 and 136.63

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Solution

The fourth proportional to 223.93, 308.95 and 136.63 is: 188.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.93 : 308.95 = 136.63 : x
  2. Step 2: Convert to fraction form
    223.93/308.95 = 136.63/x
  3. Step 3: Cross multiply
    223.93x = 308.95 × 136.63
  4. Step 4: Simplify right side
    223.93x = 42,211.84
  5. Step 5: Solve for x
    x = 42,211.84/223.93
  6. Step 6: Final answer
    x = 188.50

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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.