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Finding the Fourth Proportional to 156.77, 216.27 and 101.59

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Solution

The fourth proportional to 156.77, 216.27 and 101.59 is: 140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.77 : 216.27 = 101.59 : x
  2. Step 2: Convert to fraction form
    156.77/216.27 = 101.59/x
  3. Step 3: Cross multiply
    156.77x = 216.27 × 101.59
  4. Step 4: Simplify right side
    156.77x = 21,970.33
  5. Step 5: Solve for x
    x = 21,970.33/156.77
  6. Step 6: Final answer
    x = 140.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.