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Finding the Fourth Proportional to 157, 236.71 and 125.32

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Solution

The fourth proportional to 157, 236.71 and 125.32 is: 188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157 : 236.71 = 125.32 : x
  2. Step 2: Convert to fraction form
    157/236.71 = 125.32/x
  3. Step 3: Cross multiply
    157x = 236.71 × 125.32
  4. Step 4: Simplify right side
    157x = 29,664.50
  5. Step 5: Solve for x
    x = 29,664.50/157
  6. Step 6: Final answer
    x = 188.95

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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.