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Finding the Fourth Proportional to 1,712.60, 2,568.90 and 414.06

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Solution

The fourth proportional to 1,712.60, 2,568.90 and 414.06 is: 621.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.60 : 2,568.90 = 414.06 : x
  2. Step 2: Convert to fraction form
    1,712.60/2,568.90 = 414.06/x
  3. Step 3: Cross multiply
    1,712.60x = 2,568.90 × 414.06
  4. Step 4: Simplify right side
    1,712.60x = 1,063,678.73
  5. Step 5: Solve for x
    x = 1,063,678.73/1,712.60
  6. Step 6: Final answer
    x = 621.09

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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.