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Finding the Fourth Proportional to 245.58, 368.50 and 108.76

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Solution

The fourth proportional to 245.58, 368.50 and 108.76 is: 163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.58 : 368.50 = 108.76 : x
  2. Step 2: Convert to fraction form
    245.58/368.50 = 108.76/x
  3. Step 3: Cross multiply
    245.58x = 368.50 × 108.76
  4. Step 4: Simplify right side
    245.58x = 40,078.06
  5. Step 5: Solve for x
    x = 40,078.06/245.58
  6. Step 6: Final answer
    x = 163.20

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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.