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Finding the Fourth Proportional to 345.37, 476.34 and 225.65

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Solution

The fourth proportional to 345.37, 476.34 and 225.65 is: 311.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.37 : 476.34 = 225.65 : x
  2. Step 2: Convert to fraction form
    345.37/476.34 = 225.65/x
  3. Step 3: Cross multiply
    345.37x = 476.34 × 225.65
  4. Step 4: Simplify right side
    345.37x = 107,487.31
  5. Step 5: Solve for x
    x = 107,487.31/345.37
  6. Step 6: Final answer
    x = 311.23

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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.