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Finding the Fourth Proportional to 73.07, 109.58 and 26.79

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Solution

The fourth proportional to 73.07, 109.58 and 26.79 is: 40.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.07 : 109.58 = 26.79 : x
  2. Step 2: Convert to fraction form
    73.07/109.58 = 26.79/x
  3. Step 3: Cross multiply
    73.07x = 109.58 × 26.79
  4. Step 4: Simplify right side
    73.07x = 2,935.10
  5. Step 5: Solve for x
    x = 2,935.10/73.07
  6. Step 6: Final answer
    x = 40.17

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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.