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Finding the Fourth Proportional to 35.35, 52.81 and 26.81

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Solution

The fourth proportional to 35.35, 52.81 and 26.81 is: 40.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.35 : 52.81 = 26.81 : x
  2. Step 2: Convert to fraction form
    35.35/52.81 = 26.81/x
  3. Step 3: Cross multiply
    35.35x = 52.81 × 26.81
  4. Step 4: Simplify right side
    35.35x = 1,415.84
  5. Step 5: Solve for x
    x = 1,415.84/35.35
  6. Step 6: Final answer
    x = 40.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.