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Finding the Fourth Proportional to 452.87, 623.99 and 305.25

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Solution

The fourth proportional to 452.87, 623.99 and 305.25 is: 420.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.87 : 623.99 = 305.25 : x
  2. Step 2: Convert to fraction form
    452.87/623.99 = 305.25/x
  3. Step 3: Cross multiply
    452.87x = 623.99 × 305.25
  4. Step 4: Simplify right side
    452.87x = 190,469.83
  5. Step 5: Solve for x
    x = 190,469.83/452.87
  6. Step 6: Final answer
    x = 420.58

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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.