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Finding the Fourth Proportional to 436.66, 655.09 and 193.25

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Solution

The fourth proportional to 436.66, 655.09 and 193.25 is: 289.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.66 : 655.09 = 193.25 : x
  2. Step 2: Convert to fraction form
    436.66/655.09 = 193.25/x
  3. Step 3: Cross multiply
    436.66x = 655.09 × 193.25
  4. Step 4: Simplify right side
    436.66x = 126,595.18
  5. Step 5: Solve for x
    x = 126,595.18/436.66
  6. Step 6: Final answer
    x = 289.92

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Why These Related Problems?

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