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Finding the Fourth Proportional to 93, 139.46 and 54.44

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Solution

The fourth proportional to 93, 139.46 and 54.44 is: 81.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    93 : 139.46 = 54.44 : x
  2. Step 2: Convert to fraction form
    93/139.46 = 54.44/x
  3. Step 3: Cross multiply
    93x = 139.46 × 54.44
  4. Step 4: Simplify right side
    93x = 7,592.20
  5. Step 5: Solve for x
    x = 7,592.20/93
  6. Step 6: Final answer
    x = 81.64

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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.