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Finding the Fourth Proportional to 223.30, 336.64 and 207.64

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Solution

The fourth proportional to 223.30, 336.64 and 207.64 is: 313.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.30 : 336.64 = 207.64 : x
  2. Step 2: Convert to fraction form
    223.30/336.64 = 207.64/x
  3. Step 3: Cross multiply
    223.30x = 336.64 × 207.64
  4. Step 4: Simplify right side
    223.30x = 69,898.25
  5. Step 5: Solve for x
    x = 69,898.25/223.30
  6. Step 6: Final answer
    x = 313.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.