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Finding the Fourth Proportional to 219.61, 302.73 and 194.98

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Solution

The fourth proportional to 219.61, 302.73 and 194.98 is: 268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.61 : 302.73 = 194.98 : x
  2. Step 2: Convert to fraction form
    219.61/302.73 = 194.98/x
  3. Step 3: Cross multiply
    219.61x = 302.73 × 194.98
  4. Step 4: Simplify right side
    219.61x = 59,026.30
  5. Step 5: Solve for x
    x = 59,026.30/219.61
  6. Step 6: Final answer
    x = 268.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.