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Finding the Fourth Proportional to 144.04, 216.00 and 51.48

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Solution

The fourth proportional to 144.04, 216.00 and 51.48 is: 77.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.04 : 216.00 = 51.48 : x
  2. Step 2: Convert to fraction form
    144.04/216.00 = 51.48/x
  3. Step 3: Cross multiply
    144.04x = 216.00 × 51.48
  4. Step 4: Simplify right side
    144.04x = 11,119.76
  5. Step 5: Solve for x
    x = 11,119.76/144.04
  6. Step 6: Final answer
    x = 77.20

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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.