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Finding the Fourth Proportional to 164.16, 244.89 and 145.94

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Solution

The fourth proportional to 164.16, 244.89 and 145.94 is: 217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.16 : 244.89 = 145.94 : x
  2. Step 2: Convert to fraction form
    164.16/244.89 = 145.94/x
  3. Step 3: Cross multiply
    164.16x = 244.89 × 145.94
  4. Step 4: Simplify right side
    164.16x = 35,738.02
  5. Step 5: Solve for x
    x = 35,738.02/164.16
  6. Step 6: Final answer
    x = 217.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.