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Finding the Fourth Proportional to 155.48, 214.47 and 93.27

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Solution

The fourth proportional to 155.48, 214.47 and 93.27 is: 128.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.48 : 214.47 = 93.27 : x
  2. Step 2: Convert to fraction form
    155.48/214.47 = 93.27/x
  3. Step 3: Cross multiply
    155.48x = 214.47 × 93.27
  4. Step 4: Simplify right side
    155.48x = 20,003.62
  5. Step 5: Solve for x
    x = 20,003.62/155.48
  6. Step 6: Final answer
    x = 128.66

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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.