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Finding the Fourth Proportional to 345.10, 476.26 and 234.80

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Solution

The fourth proportional to 345.10, 476.26 and 234.80 is: 324.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.10 : 476.26 = 234.80 : x
  2. Step 2: Convert to fraction form
    345.10/476.26 = 234.80/x
  3. Step 3: Cross multiply
    345.10x = 476.26 × 234.80
  4. Step 4: Simplify right side
    345.10x = 111,825.85
  5. Step 5: Solve for x
    x = 111,825.85/345.10
  6. Step 6: Final answer
    x = 324.04

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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.