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Finding the Fourth Proportional to 148.08, 205.28 and 145.10

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Solution

The fourth proportional to 148.08, 205.28 and 145.10 is: 201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.08 : 205.28 = 145.10 : x
  2. Step 2: Convert to fraction form
    148.08/205.28 = 145.10/x
  3. Step 3: Cross multiply
    148.08x = 205.28 × 145.10
  4. Step 4: Simplify right side
    148.08x = 29,786.13
  5. Step 5: Solve for x
    x = 29,786.13/148.08
  6. Step 6: Final answer
    x = 201.15

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.