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Finding the Fourth Proportional to 47.02, 70.25 and 41.92

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Solution

The fourth proportional to 47.02, 70.25 and 41.92 is: 62.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.02 : 70.25 = 41.92 : x
  2. Step 2: Convert to fraction form
    47.02/70.25 = 41.92/x
  3. Step 3: Cross multiply
    47.02x = 70.25 × 41.92
  4. Step 4: Simplify right side
    47.02x = 2,944.88
  5. Step 5: Solve for x
    x = 2,944.88/47.02
  6. Step 6: Final answer
    x = 62.63

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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.