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Finding the Fourth Proportional to 114.86, 172.32 and 37.82

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Solution

The fourth proportional to 114.86, 172.32 and 37.82 is: 56.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.86 : 172.32 = 37.82 : x
  2. Step 2: Convert to fraction form
    114.86/172.32 = 37.82/x
  3. Step 3: Cross multiply
    114.86x = 172.32 × 37.82
  4. Step 4: Simplify right side
    114.86x = 6,516.57
  5. Step 5: Solve for x
    x = 6,516.57/114.86
  6. Step 6: Final answer
    x = 56.74

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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.