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Finding the Fourth Proportional to 188.16, 280.38 and 177.36

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Solution

The fourth proportional to 188.16, 280.38 and 177.36 is: 264.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.16 : 280.38 = 177.36 : x
  2. Step 2: Convert to fraction form
    188.16/280.38 = 177.36/x
  3. Step 3: Cross multiply
    188.16x = 280.38 × 177.36
  4. Step 4: Simplify right side
    188.16x = 49,728.20
  5. Step 5: Solve for x
    x = 49,728.20/188.16
  6. Step 6: Final answer
    x = 264.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.