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Finding the Fourth Proportional to 1,645.51, 2,468.22 and 549.90

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Solution

The fourth proportional to 1,645.51, 2,468.22 and 549.90 is: 824.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.51 : 2,468.22 = 549.90 : x
  2. Step 2: Convert to fraction form
    1,645.51/2,468.22 = 549.90/x
  3. Step 3: Cross multiply
    1,645.51x = 2,468.22 × 549.90
  4. Step 4: Simplify right side
    1,645.51x = 1,357,274.18
  5. Step 5: Solve for x
    x = 1,357,274.18/1,645.51
  6. Step 6: Final answer
    x = 824.83

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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.