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Finding the Fourth Proportional to 155.54, 214.60 and 93.34

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Solution

The fourth proportional to 155.54, 214.60 and 93.34 is: 128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.54 : 214.60 = 93.34 : x
  2. Step 2: Convert to fraction form
    155.54/214.60 = 93.34/x
  3. Step 3: Cross multiply
    155.54x = 214.60 × 93.34
  4. Step 4: Simplify right side
    155.54x = 20,030.76
  5. Step 5: Solve for x
    x = 20,030.76/155.54
  6. Step 6: Final answer
    x = 128.78

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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.