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Finding the Fourth Proportional to 67.40, 101.04 and 51.32

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Solution

The fourth proportional to 67.40, 101.04 and 51.32 is: 76.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.40 : 101.04 = 51.32 : x
  2. Step 2: Convert to fraction form
    67.40/101.04 = 51.32/x
  3. Step 3: Cross multiply
    67.40x = 101.04 × 51.32
  4. Step 4: Simplify right side
    67.40x = 5,185.37
  5. Step 5: Solve for x
    x = 5,185.37/67.40
  6. Step 6: Final answer
    x = 76.93

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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.