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Finding the Fourth Proportional to 160.77, 222.05 and 145.22

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Solution

The fourth proportional to 160.77, 222.05 and 145.22 is: 200.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.77 : 222.05 = 145.22 : x
  2. Step 2: Convert to fraction form
    160.77/222.05 = 145.22/x
  3. Step 3: Cross multiply
    160.77x = 222.05 × 145.22
  4. Step 4: Simplify right side
    160.77x = 32,246.10
  5. Step 5: Solve for x
    x = 32,246.10/160.77
  6. Step 6: Final answer
    x = 200.57

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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.