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Finding the Fourth Proportional to 1,714.60, 2,570.55 and 739.90

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Solution

The fourth proportional to 1,714.60, 2,570.55 and 739.90 is: 1,109.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,714.60 : 2,570.55 = 739.90 : x
  2. Step 2: Convert to fraction form
    1,714.60/2,570.55 = 739.90/x
  3. Step 3: Cross multiply
    1,714.60x = 2,570.55 × 739.90
  4. Step 4: Simplify right side
    1,714.60x = 1,901,949.95
  5. Step 5: Solve for x
    x = 1,901,949.95/1,714.60
  6. Step 6: Final answer
    x = 1,109.27

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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.