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Finding the Fourth Proportional to 35.18, 48.60 and 28.25

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Solution

The fourth proportional to 35.18, 48.60 and 28.25 is: 39.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.18 : 48.60 = 28.25 : x
  2. Step 2: Convert to fraction form
    35.18/48.60 = 28.25/x
  3. Step 3: Cross multiply
    35.18x = 48.60 × 28.25
  4. Step 4: Simplify right side
    35.18x = 1,372.89
  5. Step 5: Solve for x
    x = 1,372.89/35.18
  6. Step 6: Final answer
    x = 39.02

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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.