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Finding the Fourth Proportional to 144.55, 216.35 and 93.06

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Solution

The fourth proportional to 144.55, 216.35 and 93.06 is: 139.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.55 : 216.35 = 93.06 : x
  2. Step 2: Convert to fraction form
    144.55/216.35 = 93.06/x
  3. Step 3: Cross multiply
    144.55x = 216.35 × 93.06
  4. Step 4: Simplify right side
    144.55x = 20,131.98
  5. Step 5: Solve for x
    x = 20,131.98/144.55
  6. Step 6: Final answer
    x = 139.28

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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.