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Finding the Fourth Proportional to 94, 139.48 and 94

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Solution

The fourth proportional to 94, 139.48 and 94 is: 139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    94 : 139.48 = 94 : x
  2. Step 2: Convert to fraction form
    94/139.48 = 94/x
  3. Step 3: Cross multiply
    94x = 139.48 × 94
  4. Step 4: Simplify right side
    94x = 13,111.12
  5. Step 5: Solve for x
    x = 13,111.12/94
  6. Step 6: Final answer
    x = 139.48

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.