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Finding the Fourth Proportional to 245.00, 337.55 and 218.77

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Solution

The fourth proportional to 245.00, 337.55 and 218.77 is: 301.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.00 : 337.55 = 218.77 : x
  2. Step 2: Convert to fraction form
    245.00/337.55 = 218.77/x
  3. Step 3: Cross multiply
    245.00x = 337.55 × 218.77
  4. Step 4: Simplify right side
    245.00x = 73,847.01
  5. Step 5: Solve for x
    x = 73,847.01/245.00
  6. Step 6: Final answer
    x = 301.42

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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.