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Finding the Fourth Proportional to 118.36, 177.51 and 56.62

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Solution

The fourth proportional to 118.36, 177.51 and 56.62 is: 84.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.36 : 177.51 = 56.62 : x
  2. Step 2: Convert to fraction form
    118.36/177.51 = 56.62/x
  3. Step 3: Cross multiply
    118.36x = 177.51 × 56.62
  4. Step 4: Simplify right side
    118.36x = 10,050.05
  5. Step 5: Solve for x
    x = 10,050.05/118.36
  6. Step 6: Final answer
    x = 84.91

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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.