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Finding the Fourth Proportional to 623.12, 859.96 and 343.41

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Solution

The fourth proportional to 623.12, 859.96 and 343.41 is: 473.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.12 : 859.96 = 343.41 : x
  2. Step 2: Convert to fraction form
    623.12/859.96 = 343.41/x
  3. Step 3: Cross multiply
    623.12x = 859.96 × 343.41
  4. Step 4: Simplify right side
    623.12x = 295,318.01
  5. Step 5: Solve for x
    x = 295,318.01/623.12
  6. Step 6: Final answer
    x = 473.93

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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.