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Finding the Fourth Proportional to 200.57, 300.71 and 103.10

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Solution

The fourth proportional to 200.57, 300.71 and 103.10 is: 154.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.57 : 300.71 = 103.10 : x
  2. Step 2: Convert to fraction form
    200.57/300.71 = 103.10/x
  3. Step 3: Cross multiply
    200.57x = 300.71 × 103.10
  4. Step 4: Simplify right side
    200.57x = 31,001.18
  5. Step 5: Solve for x
    x = 31,001.18/200.57
  6. Step 6: Final answer
    x = 154.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.