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Finding the Fourth Proportional to 156.51, 236.39 and 156.51

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Solution

The fourth proportional to 156.51, 236.39 and 156.51 is: 236.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.51 : 236.39 = 156.51 : x
  2. Step 2: Convert to fraction form
    156.51/236.39 = 156.51/x
  3. Step 3: Cross multiply
    156.51x = 236.39 × 156.51
  4. Step 4: Simplify right side
    156.51x = 36,996.62
  5. Step 5: Solve for x
    x = 36,996.62/156.51
  6. Step 6: Final answer
    x = 236.39

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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.