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Finding the Fourth Proportional to 205.68, 307.80 and 151.32

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Solution

The fourth proportional to 205.68, 307.80 and 151.32 is: 226.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.68 : 307.80 = 151.32 : x
  2. Step 2: Convert to fraction form
    205.68/307.80 = 151.32/x
  3. Step 3: Cross multiply
    205.68x = 307.80 × 151.32
  4. Step 4: Simplify right side
    205.68x = 46,576.30
  5. Step 5: Solve for x
    x = 46,576.30/205.68
  6. Step 6: Final answer
    x = 226.45

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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.