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Finding the Fourth Proportional to 188.64, 280.96 and 184.70

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Solution

The fourth proportional to 188.64, 280.96 and 184.70 is: 275.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.64 : 280.96 = 184.70 : x
  2. Step 2: Convert to fraction form
    188.64/280.96 = 184.70/x
  3. Step 3: Cross multiply
    188.64x = 280.96 × 184.70
  4. Step 4: Simplify right side
    188.64x = 51,893.31
  5. Step 5: Solve for x
    x = 51,893.31/188.64
  6. Step 6: Final answer
    x = 275.09

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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.