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Finding the Fourth Proportional to 219.72, 303.32 and 150.15

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Solution

The fourth proportional to 219.72, 303.32 and 150.15 is: 207.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.72 : 303.32 = 150.15 : x
  2. Step 2: Convert to fraction form
    219.72/303.32 = 150.15/x
  3. Step 3: Cross multiply
    219.72x = 303.32 × 150.15
  4. Step 4: Simplify right side
    219.72x = 45,543.50
  5. Step 5: Solve for x
    x = 45,543.50/219.72
  6. Step 6: Final answer
    x = 207.28

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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.