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Finding the Fourth Proportional to 35.07, 48.17 and 28.92

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Solution

The fourth proportional to 35.07, 48.17 and 28.92 is: 39.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.07 : 48.17 = 28.92 : x
  2. Step 2: Convert to fraction form
    35.07/48.17 = 28.92/x
  3. Step 3: Cross multiply
    35.07x = 48.17 × 28.92
  4. Step 4: Simplify right side
    35.07x = 1,393.10
  5. Step 5: Solve for x
    x = 1,393.10/35.07
  6. Step 6: Final answer
    x = 39.72

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.