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Finding the Fourth Proportional to 1,238.06, 1,857.10 and 468.56

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Solution

The fourth proportional to 1,238.06, 1,857.10 and 468.56 is: 702.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238.06 : 1,857.10 = 468.56 : x
  2. Step 2: Convert to fraction form
    1,238.06/1,857.10 = 468.56/x
  3. Step 3: Cross multiply
    1,238.06x = 1,857.10 × 468.56
  4. Step 4: Simplify right side
    1,238.06x = 870,166.25
  5. Step 5: Solve for x
    x = 870,166.25/1,238.06
  6. Step 6: Final answer
    x = 702.85

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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.