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Finding the Fourth Proportional to 147.60, 203.08 and 143.14

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Solution

The fourth proportional to 147.60, 203.08 and 143.14 is: 196.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.60 : 203.08 = 143.14 : x
  2. Step 2: Convert to fraction form
    147.60/203.08 = 143.14/x
  3. Step 3: Cross multiply
    147.60x = 203.08 × 143.14
  4. Step 4: Simplify right side
    147.60x = 29,068.87
  5. Step 5: Solve for x
    x = 29,068.87/147.60
  6. Step 6: Final answer
    x = 196.94

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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.