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Finding the Fourth Proportional to 104.53, 156.73 and 46.72

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Solution

The fourth proportional to 104.53, 156.73 and 46.72 is: 70.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.53 : 156.73 = 46.72 : x
  2. Step 2: Convert to fraction form
    104.53/156.73 = 46.72/x
  3. Step 3: Cross multiply
    104.53x = 156.73 × 46.72
  4. Step 4: Simplify right side
    104.53x = 7,321.64
  5. Step 5: Solve for x
    x = 7,321.64/104.53
  6. Step 6: Final answer
    x = 70.05

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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.