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Finding the Fourth Proportional to 1,522.63, 2,283.96 and 427

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Solution

The fourth proportional to 1,522.63, 2,283.96 and 427 is: 640.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.63 : 2,283.96 = 427 : x
  2. Step 2: Convert to fraction form
    1,522.63/2,283.96 = 427/x
  3. Step 3: Cross multiply
    1,522.63x = 2,283.96 × 427
  4. Step 4: Simplify right side
    1,522.63x = 975,250.92
  5. Step 5: Solve for x
    x = 975,250.92/1,522.63
  6. Step 6: Final answer
    x = 640.50

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Double scale
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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.