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Finding the Fourth Proportional to 1,242, 1,863.30 and 376.32

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Solution

The fourth proportional to 1,242, 1,863.30 and 376.32 is: 564.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242 : 1,863.30 = 376.32 : x
  2. Step 2: Convert to fraction form
    1,242/1,863.30 = 376.32/x
  3. Step 3: Cross multiply
    1,242x = 1,863.30 × 376.32
  4. Step 4: Simplify right side
    1,242x = 701,197.06
  5. Step 5: Solve for x
    x = 701,197.06/1,242
  6. Step 6: Final answer
    x = 564.57

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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.