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Finding the Fourth Proportional to 436.63, 655.14 and 193.23

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Solution

The fourth proportional to 436.63, 655.14 and 193.23 is: 289.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.63 : 655.14 = 193.23 : x
  2. Step 2: Convert to fraction form
    436.63/655.14 = 193.23/x
  3. Step 3: Cross multiply
    436.63x = 655.14 × 193.23
  4. Step 4: Simplify right side
    436.63x = 126,592.70
  5. Step 5: Solve for x
    x = 126,592.70/436.63
  6. Step 6: Final answer
    x = 289.93

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.