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Finding the Fourth Proportional to 1,712.77, 2,568.61 and 558.25

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Solution

The fourth proportional to 1,712.77, 2,568.61 and 558.25 is: 837.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.77 : 2,568.61 = 558.25 : x
  2. Step 2: Convert to fraction form
    1,712.77/2,568.61 = 558.25/x
  3. Step 3: Cross multiply
    1,712.77x = 2,568.61 × 558.25
  4. Step 4: Simplify right side
    1,712.77x = 1,433,926.53
  5. Step 5: Solve for x
    x = 1,433,926.53/1,712.77
  6. Step 6: Final answer
    x = 837.20

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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.