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Finding the Fourth Proportional to 245.30, 368.16 and 147.80

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Solution

The fourth proportional to 245.30, 368.16 and 147.80 is: 221.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.30 : 368.16 = 147.80 : x
  2. Step 2: Convert to fraction form
    245.30/368.16 = 147.80/x
  3. Step 3: Cross multiply
    245.30x = 368.16 × 147.80
  4. Step 4: Simplify right side
    245.30x = 54,414.05
  5. Step 5: Solve for x
    x = 54,414.05/245.30
  6. Step 6: Final answer
    x = 221.83

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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.