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Finding the Fourth Proportional to 436.61, 655.03 and 144.16

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Solution

The fourth proportional to 436.61, 655.03 and 144.16 is: 216.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.61 : 655.03 = 144.16 : x
  2. Step 2: Convert to fraction form
    436.61/655.03 = 144.16/x
  3. Step 3: Cross multiply
    436.61x = 655.03 × 144.16
  4. Step 4: Simplify right side
    436.61x = 94,425.85
  5. Step 5: Solve for x
    x = 94,425.85/436.61
  6. Step 6: Final answer
    x = 216.27

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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.