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Finding the Fourth Proportional to 1,224.76, 1,837.86 and 531.58

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Solution

The fourth proportional to 1,224.76, 1,837.86 and 531.58 is: 797.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.76 : 1,837.86 = 531.58 : x
  2. Step 2: Convert to fraction form
    1,224.76/1,837.86 = 531.58/x
  3. Step 3: Cross multiply
    1,224.76x = 1,837.86 × 531.58
  4. Step 4: Simplify right side
    1,224.76x = 976,969.62
  5. Step 5: Solve for x
    x = 976,969.62/1,224.76
  6. Step 6: Final answer
    x = 797.68

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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.