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Finding the Fourth Proportional to 245.49, 338.60 and 158.01

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Solution

The fourth proportional to 245.49, 338.60 and 158.01 is: 217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.49 : 338.60 = 158.01 : x
  2. Step 2: Convert to fraction form
    245.49/338.60 = 158.01/x
  3. Step 3: Cross multiply
    245.49x = 338.60 × 158.01
  4. Step 4: Simplify right side
    245.49x = 53,501.40
  5. Step 5: Solve for x
    x = 53,501.40/245.49
  6. Step 6: Final answer
    x = 217.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.