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Finding the Fourth Proportional to 1,772.21, 2,657.25 and 539.25

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Solution

The fourth proportional to 1,772.21, 2,657.25 and 539.25 is: 808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.21 : 2,657.25 = 539.25 : x
  2. Step 2: Convert to fraction form
    1,772.21/2,657.25 = 539.25/x
  3. Step 3: Cross multiply
    1,772.21x = 2,657.25 × 539.25
  4. Step 4: Simplify right side
    1,772.21x = 1,432,922.06
  5. Step 5: Solve for x
    x = 1,432,922.06/1,772.21
  6. Step 6: Final answer
    x = 808.55

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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.