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Finding the Fourth Proportional to 29.77, 40.90 and 26.74

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Solution

The fourth proportional to 29.77, 40.90 and 26.74 is: 36.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.77 : 40.90 = 26.74 : x
  2. Step 2: Convert to fraction form
    29.77/40.90 = 26.74/x
  3. Step 3: Cross multiply
    29.77x = 40.90 × 26.74
  4. Step 4: Simplify right side
    29.77x = 1,093.67
  5. Step 5: Solve for x
    x = 1,093.67/29.77
  6. Step 6: Final answer
    x = 36.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.