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Finding the Fourth Proportional to 148.47, 202.31 and 145.14

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Solution

The fourth proportional to 148.47, 202.31 and 145.14 is: 197.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.47 : 202.31 = 145.14 : x
  2. Step 2: Convert to fraction form
    148.47/202.31 = 145.14/x
  3. Step 3: Cross multiply
    148.47x = 202.31 × 145.14
  4. Step 4: Simplify right side
    148.47x = 29,362.55
  5. Step 5: Solve for x
    x = 29,362.55/148.47
  6. Step 6: Final answer
    x = 197.77

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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.