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Finding the Fourth Proportional to 245.48, 368.30 and 108.54

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Solution

The fourth proportional to 245.48, 368.30 and 108.54 is: 162.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.48 : 368.30 = 108.54 : x
  2. Step 2: Convert to fraction form
    245.48/368.30 = 108.54/x
  3. Step 3: Cross multiply
    245.48x = 368.30 × 108.54
  4. Step 4: Simplify right side
    245.48x = 39,975.55
  5. Step 5: Solve for x
    x = 39,975.55/245.48
  6. Step 6: Final answer
    x = 162.85

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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.