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Finding the Fourth Proportional to 623.41, 859.53 and 475.81

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Solution

The fourth proportional to 623.41, 859.53 and 475.81 is: 656.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.41 : 859.53 = 475.81 : x
  2. Step 2: Convert to fraction form
    623.41/859.53 = 475.81/x
  3. Step 3: Cross multiply
    623.41x = 859.53 × 475.81
  4. Step 4: Simplify right side
    623.41x = 408,972.97
  5. Step 5: Solve for x
    x = 408,972.97/623.41
  6. Step 6: Final answer
    x = 656.03

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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.