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Finding the Fourth Proportional to 623.99, 861.06 and 375.33

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Solution

The fourth proportional to 623.99, 861.06 and 375.33 is: 517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.99 : 861.06 = 375.33 : x
  2. Step 2: Convert to fraction form
    623.99/861.06 = 375.33/x
  3. Step 3: Cross multiply
    623.99x = 861.06 × 375.33
  4. Step 4: Simplify right side
    623.99x = 323,181.65
  5. Step 5: Solve for x
    x = 323,181.65/623.99
  6. Step 6: Final answer
    x = 517.93

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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.