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Finding the Fourth Proportional to 307.22, 460.90 and 101.80

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Solution

The fourth proportional to 307.22, 460.90 and 101.80 is: 152.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.22 : 460.90 = 101.80 : x
  2. Step 2: Convert to fraction form
    307.22/460.90 = 101.80/x
  3. Step 3: Cross multiply
    307.22x = 460.90 × 101.80
  4. Step 4: Simplify right side
    307.22x = 46,919.62
  5. Step 5: Solve for x
    x = 46,919.62/307.22
  6. Step 6: Final answer
    x = 152.72

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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.