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Finding the Fourth Proportional to 1,627.26, 2,440.89 and 457.22

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Solution

The fourth proportional to 1,627.26, 2,440.89 and 457.22 is: 685.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.26 : 2,440.89 = 457.22 : x
  2. Step 2: Convert to fraction form
    1,627.26/2,440.89 = 457.22/x
  3. Step 3: Cross multiply
    1,627.26x = 2,440.89 × 457.22
  4. Step 4: Simplify right side
    1,627.26x = 1,116,012.99
  5. Step 5: Solve for x
    x = 1,116,012.99/1,627.26
  6. Step 6: Final answer
    x = 685.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.