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Finding the Fourth Proportional to 47.08, 65.29 and 45.60

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Solution

The fourth proportional to 47.08, 65.29 and 45.60 is: 63.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.08 : 65.29 = 45.60 : x
  2. Step 2: Convert to fraction form
    47.08/65.29 = 45.60/x
  3. Step 3: Cross multiply
    47.08x = 65.29 × 45.60
  4. Step 4: Simplify right side
    47.08x = 2,976.90
  5. Step 5: Solve for x
    x = 2,976.90/47.08
  6. Step 6: Final answer
    x = 63.23

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.