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Finding the Fourth Proportional to 223.07, 307.88 and 134.62

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Solution

The fourth proportional to 223.07, 307.88 and 134.62 is: 185.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.07 : 307.88 = 134.62 : x
  2. Step 2: Convert to fraction form
    223.07/307.88 = 134.62/x
  3. Step 3: Cross multiply
    223.07x = 307.88 × 134.62
  4. Step 4: Simplify right side
    223.07x = 41,446.81
  5. Step 5: Solve for x
    x = 41,446.81/223.07
  6. Step 6: Final answer
    x = 185.80

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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.