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Finding the Fourth Proportional to 53.56, 80.29 and 26.46

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Solution

The fourth proportional to 53.56, 80.29 and 26.46 is: 39.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.56 : 80.29 = 26.46 : x
  2. Step 2: Convert to fraction form
    53.56/80.29 = 26.46/x
  3. Step 3: Cross multiply
    53.56x = 80.29 × 26.46
  4. Step 4: Simplify right side
    53.56x = 2,124.51
  5. Step 5: Solve for x
    x = 2,124.51/53.56
  6. Step 6: Final answer
    x = 39.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.