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Finding the Fourth Proportional to 71.04, 106.44 and 69.48

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Solution

The fourth proportional to 71.04, 106.44 and 69.48 is: 104.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.04 : 106.44 = 69.48 : x
  2. Step 2: Convert to fraction form
    71.04/106.44 = 69.48/x
  3. Step 3: Cross multiply
    71.04x = 106.44 × 69.48
  4. Step 4: Simplify right side
    71.04x = 7,395.45
  5. Step 5: Solve for x
    x = 7,395.45/71.04
  6. Step 6: Final answer
    x = 104.10

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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.