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Finding the Fourth Proportional to 452.90, 620.68 and 452.18

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Solution

The fourth proportional to 452.90, 620.68 and 452.18 is: 619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.90 : 620.68 = 452.18 : x
  2. Step 2: Convert to fraction form
    452.90/620.68 = 452.18/x
  3. Step 3: Cross multiply
    452.90x = 620.68 × 452.18
  4. Step 4: Simplify right side
    452.90x = 280,659.08
  5. Step 5: Solve for x
    x = 280,659.08/452.90
  6. Step 6: Final answer
    x = 619.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.