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Finding the Fourth Proportional to 623.08, 859.90 and 343.32

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Solution

The fourth proportional to 623.08, 859.90 and 343.32 is: 473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.08 : 859.90 = 343.32 : x
  2. Step 2: Convert to fraction form
    623.08/859.90 = 343.32/x
  3. Step 3: Cross multiply
    623.08x = 859.90 × 343.32
  4. Step 4: Simplify right side
    623.08x = 295,219.18
  5. Step 5: Solve for x
    x = 295,219.18/623.08
  6. Step 6: Final answer
    x = 473.80

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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.