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Finding the Fourth Proportional to 156.50, 216.03 and 104.04

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Solution

The fourth proportional to 156.50, 216.03 and 104.04 is: 143.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.50 : 216.03 = 104.04 : x
  2. Step 2: Convert to fraction form
    156.50/216.03 = 104.04/x
  3. Step 3: Cross multiply
    156.50x = 216.03 × 104.04
  4. Step 4: Simplify right side
    156.50x = 22,475.76
  5. Step 5: Solve for x
    x = 22,475.76/156.50
  6. Step 6: Final answer
    x = 143.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.