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Finding the Fourth Proportional to 1,259.54, 1,889.24 and 382.00

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Solution

The fourth proportional to 1,259.54, 1,889.24 and 382.00 is: 572.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.54 : 1,889.24 = 382.00 : x
  2. Step 2: Convert to fraction form
    1,259.54/1,889.24 = 382.00/x
  3. Step 3: Cross multiply
    1,259.54x = 1,889.24 × 382.00
  4. Step 4: Simplify right side
    1,259.54x = 721,685.91
  5. Step 5: Solve for x
    x = 721,685.91/1,259.54
  6. Step 6: Final answer
    x = 572.98

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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.