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Finding the Fourth Proportional to 39.00, 53.79 and 24.25

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Solution

The fourth proportional to 39.00, 53.79 and 24.25 is: 33.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.00 : 53.79 = 24.25 : x
  2. Step 2: Convert to fraction form
    39.00/53.79 = 24.25/x
  3. Step 3: Cross multiply
    39.00x = 53.79 × 24.25
  4. Step 4: Simplify right side
    39.00x = 1,304.60
  5. Step 5: Solve for x
    x = 1,304.60/39.00
  6. Step 6: Final answer
    x = 33.45

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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.