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Finding the Fourth Proportional to 1,618.54, 2,428.14 and 522.82

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Solution

The fourth proportional to 1,618.54, 2,428.14 and 522.82 is: 784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.54 : 2,428.14 = 522.82 : x
  2. Step 2: Convert to fraction form
    1,618.54/2,428.14 = 522.82/x
  3. Step 3: Cross multiply
    1,618.54x = 2,428.14 × 522.82
  4. Step 4: Simplify right side
    1,618.54x = 1,269,480.15
  5. Step 5: Solve for x
    x = 1,269,480.15/1,618.54
  6. Step 6: Final answer
    x = 784.34

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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.