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Finding the Fourth Proportional to 147.30, 200.70 and 146.39

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Solution

The fourth proportional to 147.30, 200.70 and 146.39 is: 199.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.30 : 200.70 = 146.39 : x
  2. Step 2: Convert to fraction form
    147.30/200.70 = 146.39/x
  3. Step 3: Cross multiply
    147.30x = 200.70 × 146.39
  4. Step 4: Simplify right side
    147.30x = 29,379.47
  5. Step 5: Solve for x
    x = 29,379.47/147.30
  6. Step 6: Final answer
    x = 199.45

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.