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Finding the Fourth Proportional to 35.14, 48.51 and 28.66

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Solution

The fourth proportional to 35.14, 48.51 and 28.66 is: 39.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.14 : 48.51 = 28.66 : x
  2. Step 2: Convert to fraction form
    35.14/48.51 = 28.66/x
  3. Step 3: Cross multiply
    35.14x = 48.51 × 28.66
  4. Step 4: Simplify right side
    35.14x = 1,390.30
  5. Step 5: Solve for x
    x = 1,390.30/35.14
  6. Step 6: Final answer
    x = 39.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.