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Finding the Fourth Proportional to 1,719.66, 2,579.72 and 549.26

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Solution

The fourth proportional to 1,719.66, 2,579.72 and 549.26 is: 823.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.66 : 2,579.72 = 549.26 : x
  2. Step 2: Convert to fraction form
    1,719.66/2,579.72 = 549.26/x
  3. Step 3: Cross multiply
    1,719.66x = 2,579.72 × 549.26
  4. Step 4: Simplify right side
    1,719.66x = 1,416,921.36
  5. Step 5: Solve for x
    x = 1,416,921.36/1,719.66
  6. Step 6: Final answer
    x = 823.95

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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.