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Finding the Fourth Proportional to 1,236.66, 1,854.56 and 543.14

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Solution

The fourth proportional to 1,236.66, 1,854.56 and 543.14 is: 814.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.66 : 1,854.56 = 543.14 : x
  2. Step 2: Convert to fraction form
    1,236.66/1,854.56 = 543.14/x
  3. Step 3: Cross multiply
    1,236.66x = 1,854.56 × 543.14
  4. Step 4: Simplify right side
    1,236.66x = 1,007,285.72
  5. Step 5: Solve for x
    x = 1,007,285.72/1,236.66
  6. Step 6: Final answer
    x = 814.52

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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.