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Finding the Fourth Proportional to 46.50, 69.39 and 42.46

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Solution

The fourth proportional to 46.50, 69.39 and 42.46 is: 63.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.50 : 69.39 = 42.46 : x
  2. Step 2: Convert to fraction form
    46.50/69.39 = 42.46/x
  3. Step 3: Cross multiply
    46.50x = 69.39 × 42.46
  4. Step 4: Simplify right side
    46.50x = 2,946.30
  5. Step 5: Solve for x
    x = 2,946.30/46.50
  6. Step 6: Final answer
    x = 63.36

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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.