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Finding the Fourth Proportional to 1,282.49, 1,922.58 and 623.96

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Solution

The fourth proportional to 1,282.49, 1,922.58 and 623.96 is: 935.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.49 : 1,922.58 = 623.96 : x
  2. Step 2: Convert to fraction form
    1,282.49/1,922.58 = 623.96/x
  3. Step 3: Cross multiply
    1,282.49x = 1,922.58 × 623.96
  4. Step 4: Simplify right side
    1,282.49x = 1,199,603.40
  5. Step 5: Solve for x
    x = 1,199,603.40/1,282.49
  6. Step 6: Final answer
    x = 935.37

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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.