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Finding the Fourth Proportional to 144.35, 216.45 and 63.16

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Solution

The fourth proportional to 144.35, 216.45 and 63.16 is: 94.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.35 : 216.45 = 63.16 : x
  2. Step 2: Convert to fraction form
    144.35/216.45 = 63.16/x
  3. Step 3: Cross multiply
    144.35x = 216.45 × 63.16
  4. Step 4: Simplify right side
    144.35x = 13,670.98
  5. Step 5: Solve for x
    x = 13,670.98/144.35
  6. Step 6: Final answer
    x = 94.71

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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.