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Finding the Fourth Proportional to 152.17, 228.23 and 126.66

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Solution

The fourth proportional to 152.17, 228.23 and 126.66 is: 189.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.17 : 228.23 = 126.66 : x
  2. Step 2: Convert to fraction form
    152.17/228.23 = 126.66/x
  3. Step 3: Cross multiply
    152.17x = 228.23 × 126.66
  4. Step 4: Simplify right side
    152.17x = 28,906.03
  5. Step 5: Solve for x
    x = 28,906.03/152.17
  6. Step 6: Final answer
    x = 189.96

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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.