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Finding the Fourth Proportional to 245.88, 368.68 and 83.50

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Solution

The fourth proportional to 245.88, 368.68 and 83.50 is: 125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.88 : 368.68 = 83.50 : x
  2. Step 2: Convert to fraction form
    245.88/368.68 = 83.50/x
  3. Step 3: Cross multiply
    245.88x = 368.68 × 83.50
  4. Step 4: Simplify right side
    245.88x = 30,784.78
  5. Step 5: Solve for x
    x = 30,784.78/245.88
  6. Step 6: Final answer
    x = 125.20

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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.