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Finding the Fourth Proportional to 245.12, 368.24 and 147.87

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Solution

The fourth proportional to 245.12, 368.24 and 147.87 is: 222.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.12 : 368.24 = 147.87 : x
  2. Step 2: Convert to fraction form
    245.12/368.24 = 147.87/x
  3. Step 3: Cross multiply
    245.12x = 368.24 × 147.87
  4. Step 4: Simplify right side
    245.12x = 54,450.91
  5. Step 5: Solve for x
    x = 54,450.91/245.12
  6. Step 6: Final answer
    x = 222.14

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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.