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Finding the Fourth Proportional to 47.29, 71.29 and 46.59

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Solution

The fourth proportional to 47.29, 71.29 and 46.59 is: 70.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.29 : 71.29 = 46.59 : x
  2. Step 2: Convert to fraction form
    47.29/71.29 = 46.59/x
  3. Step 3: Cross multiply
    47.29x = 71.29 × 46.59
  4. Step 4: Simplify right side
    47.29x = 3,321.40
  5. Step 5: Solve for x
    x = 3,321.40/47.29
  6. Step 6: Final answer
    x = 70.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.