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Finding the Fourth Proportional to 118.58, 177.60 and 70.52

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Solution

The fourth proportional to 118.58, 177.60 and 70.52 is: 105.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.58 : 177.60 = 70.52 : x
  2. Step 2: Convert to fraction form
    118.58/177.60 = 70.52/x
  3. Step 3: Cross multiply
    118.58x = 177.60 × 70.52
  4. Step 4: Simplify right side
    118.58x = 12,523.46
  5. Step 5: Solve for x
    x = 12,523.46/118.58
  6. Step 6: Final answer
    x = 105.62

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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.