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Finding the Fourth Proportional to 188.36, 283.94 and 156.50

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Solution

The fourth proportional to 188.36, 283.94 and 156.50 is: 235.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.36 : 283.94 = 156.50 : x
  2. Step 2: Convert to fraction form
    188.36/283.94 = 156.50/x
  3. Step 3: Cross multiply
    188.36x = 283.94 × 156.50
  4. Step 4: Simplify right side
    188.36x = 44,436.61
  5. Step 5: Solve for x
    x = 44,436.61/188.36
  6. Step 6: Final answer
    x = 235.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.