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Finding the Fourth Proportional to 245.95, 368.94 and 83.63

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Solution

The fourth proportional to 245.95, 368.94 and 83.63 is: 125.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.95 : 368.94 = 83.63 : x
  2. Step 2: Convert to fraction form
    245.95/368.94 = 83.63/x
  3. Step 3: Cross multiply
    245.95x = 368.94 × 83.63
  4. Step 4: Simplify right side
    245.95x = 30,854.45
  5. Step 5: Solve for x
    x = 30,854.45/245.95
  6. Step 6: Final answer
    x = 125.45

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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.