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Finding the Fourth Proportional to 1,618.12, 2,427.27 and 507.69

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Solution

The fourth proportional to 1,618.12, 2,427.27 and 507.69 is: 761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.12 : 2,427.27 = 507.69 : x
  2. Step 2: Convert to fraction form
    1,618.12/2,427.27 = 507.69/x
  3. Step 3: Cross multiply
    1,618.12x = 2,427.27 × 507.69
  4. Step 4: Simplify right side
    1,618.12x = 1,232,286.03
  5. Step 5: Solve for x
    x = 1,232,286.03/1,618.12
  6. Step 6: Final answer
    x = 761.55

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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.