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Finding the Fourth Proportional to 35.33, 48.76 and 19.79

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Solution

The fourth proportional to 35.33, 48.76 and 19.79 is: 27.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.33 : 48.76 = 19.79 : x
  2. Step 2: Convert to fraction form
    35.33/48.76 = 19.79/x
  3. Step 3: Cross multiply
    35.33x = 48.76 × 19.79
  4. Step 4: Simplify right side
    35.33x = 964.96
  5. Step 5: Solve for x
    x = 964.96/35.33
  6. Step 6: Final answer
    x = 27.31

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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.