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Finding the Fourth Proportional to 53.06, 79.92 and 51.03

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Solution

The fourth proportional to 53.06, 79.92 and 51.03 is: 76.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.06 : 79.92 = 51.03 : x
  2. Step 2: Convert to fraction form
    53.06/79.92 = 51.03/x
  3. Step 3: Cross multiply
    53.06x = 79.92 × 51.03
  4. Step 4: Simplify right side
    53.06x = 4,078.32
  5. Step 5: Solve for x
    x = 4,078.32/53.06
  6. Step 6: Final answer
    x = 76.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.