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Finding the Fourth Proportional to 452.12, 623.69 and 286.04

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Solution

The fourth proportional to 452.12, 623.69 and 286.04 is: 394.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.12 : 623.69 = 286.04 : x
  2. Step 2: Convert to fraction form
    452.12/623.69 = 286.04/x
  3. Step 3: Cross multiply
    452.12x = 623.69 × 286.04
  4. Step 4: Simplify right side
    452.12x = 178,400.29
  5. Step 5: Solve for x
    x = 178,400.29/452.12
  6. Step 6: Final answer
    x = 394.59

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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.