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Finding the Fourth Proportional to 1,657.14, 2,486.01 and 682.71

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Solution

The fourth proportional to 1,657.14, 2,486.01 and 682.71 is: 1,024.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.14 : 2,486.01 = 682.71 : x
  2. Step 2: Convert to fraction form
    1,657.14/2,486.01 = 682.71/x
  3. Step 3: Cross multiply
    1,657.14x = 2,486.01 × 682.71
  4. Step 4: Simplify right side
    1,657.14x = 1,697,214.26
  5. Step 5: Solve for x
    x = 1,697,214.26/1,657.14
  6. Step 6: Final answer
    x = 1,024.18

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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.