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Finding the Fourth Proportional to 245.31, 368.18 and 101.13

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Solution

The fourth proportional to 245.31, 368.18 and 101.13 is: 151.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.31 : 368.18 = 101.13 : x
  2. Step 2: Convert to fraction form
    245.31/368.18 = 101.13/x
  3. Step 3: Cross multiply
    245.31x = 368.18 × 101.13
  4. Step 4: Simplify right side
    245.31x = 37,233.54
  5. Step 5: Solve for x
    x = 37,233.54/245.31
  6. Step 6: Final answer
    x = 151.78

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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.