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Finding the Fourth Proportional to 245.42, 368.01 and 82.99

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Solution

The fourth proportional to 245.42, 368.01 and 82.99 is: 124.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.42 : 368.01 = 82.99 : x
  2. Step 2: Convert to fraction form
    245.42/368.01 = 82.99/x
  3. Step 3: Cross multiply
    245.42x = 368.01 × 82.99
  4. Step 4: Simplify right side
    245.42x = 30,538.89
  5. Step 5: Solve for x
    x = 30,538.89/245.42
  6. Step 6: Final answer
    x = 124.44

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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.