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Finding the Fourth Proportional to 436.01, 654.05 and 111.38

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Solution

The fourth proportional to 436.01, 654.05 and 111.38 is: 167.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.01 : 654.05 = 111.38 : x
  2. Step 2: Convert to fraction form
    436.01/654.05 = 111.38/x
  3. Step 3: Cross multiply
    436.01x = 654.05 × 111.38
  4. Step 4: Simplify right side
    436.01x = 72,844.78
  5. Step 5: Solve for x
    x = 72,844.78/436.01
  6. Step 6: Final answer
    x = 167.07

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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.