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Finding the Fourth Proportional to 39.02, 53.76 and 35.27

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Solution

The fourth proportional to 39.02, 53.76 and 35.27 is: 48.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.02 : 53.76 = 35.27 : x
  2. Step 2: Convert to fraction form
    39.02/53.76 = 35.27/x
  3. Step 3: Cross multiply
    39.02x = 53.76 × 35.27
  4. Step 4: Simplify right side
    39.02x = 1,896.18
  5. Step 5: Solve for x
    x = 1,896.18/39.02
  6. Step 6: Final answer
    x = 48.60

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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.