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Finding the Fourth Proportional to 144.12, 216.16 and 98.52

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Solution

The fourth proportional to 144.12, 216.16 and 98.52 is: 147.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.12 : 216.16 = 98.52 : x
  2. Step 2: Convert to fraction form
    144.12/216.16 = 98.52/x
  3. Step 3: Cross multiply
    144.12x = 216.16 × 98.52
  4. Step 4: Simplify right side
    144.12x = 21,296.08
  5. Step 5: Solve for x
    x = 21,296.08/144.12
  6. Step 6: Final answer
    x = 147.77

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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.