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Finding the Fourth Proportional to 1,772.31, 2,657.45 and 539.36

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Solution

The fourth proportional to 1,772.31, 2,657.45 and 539.36 is: 808.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.31 : 2,657.45 = 539.36 : x
  2. Step 2: Convert to fraction form
    1,772.31/2,657.45 = 539.36/x
  3. Step 3: Cross multiply
    1,772.31x = 2,657.45 × 539.36
  4. Step 4: Simplify right side
    1,772.31x = 1,433,308.94
  5. Step 5: Solve for x
    x = 1,433,308.94/1,772.31
  6. Step 6: Final answer
    x = 808.72

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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.