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Finding the Fourth Proportional to 46.42, 69.56 and 43

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Solution

The fourth proportional to 46.42, 69.56 and 43 is: 64.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.42 : 69.56 = 43 : x
  2. Step 2: Convert to fraction form
    46.42/69.56 = 43/x
  3. Step 3: Cross multiply
    46.42x = 69.56 × 43
  4. Step 4: Simplify right side
    46.42x = 2,991.08
  5. Step 5: Solve for x
    x = 2,991.08/46.42
  6. Step 6: Final answer
    x = 64.44

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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.