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Finding the Fourth Proportional to 245.68, 338.24 and 210.64

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Solution

The fourth proportional to 245.68, 338.24 and 210.64 is: 290.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.68 : 338.24 = 210.64 : x
  2. Step 2: Convert to fraction form
    245.68/338.24 = 210.64/x
  3. Step 3: Cross multiply
    245.68x = 338.24 × 210.64
  4. Step 4: Simplify right side
    245.68x = 71,246.87
  5. Step 5: Solve for x
    x = 71,246.87/245.68
  6. Step 6: Final answer
    x = 290.00

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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.