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Finding the Fourth Proportional to 225.55, 336.66 and 209.03

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Solution

The fourth proportional to 225.55, 336.66 and 209.03 is: 312.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.55 : 336.66 = 209.03 : x
  2. Step 2: Convert to fraction form
    225.55/336.66 = 209.03/x
  3. Step 3: Cross multiply
    225.55x = 336.66 × 209.03
  4. Step 4: Simplify right side
    225.55x = 70,372.04
  5. Step 5: Solve for x
    x = 70,372.04/225.55
  6. Step 6: Final answer
    x = 312.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.