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Finding the Fourth Proportional to 104.03, 156.09 and 39.05

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Solution

The fourth proportional to 104.03, 156.09 and 39.05 is: 58.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.03 : 156.09 = 39.05 : x
  2. Step 2: Convert to fraction form
    104.03/156.09 = 39.05/x
  3. Step 3: Cross multiply
    104.03x = 156.09 × 39.05
  4. Step 4: Simplify right side
    104.03x = 6,094.53
  5. Step 5: Solve for x
    x = 6,094.53/104.03
  6. Step 6: Final answer
    x = 58.59

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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.