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Finding the Fourth Proportional to 1,522.80, 2,283.93 and 426.91

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Solution

The fourth proportional to 1,522.80, 2,283.93 and 426.91 is: 640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.80 : 2,283.93 = 426.91 : x
  2. Step 2: Convert to fraction form
    1,522.80/2,283.93 = 426.91/x
  3. Step 3: Cross multiply
    1,522.80x = 2,283.93 × 426.91
  4. Step 4: Simplify right side
    1,522.80x = 975,021.14
  5. Step 5: Solve for x
    x = 975,021.14/1,522.80
  6. Step 6: Final answer
    x = 640.28

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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.