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Finding the Fourth Proportional to 163.34, 224.72 and 145.70

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Solution

The fourth proportional to 163.34, 224.72 and 145.70 is: 200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.34 : 224.72 = 145.70 : x
  2. Step 2: Convert to fraction form
    163.34/224.72 = 145.70/x
  3. Step 3: Cross multiply
    163.34x = 224.72 × 145.70
  4. Step 4: Simplify right side
    163.34x = 32,741.70
  5. Step 5: Solve for x
    x = 32,741.70/163.34
  6. Step 6: Final answer
    x = 200.45

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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.