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Finding the Fourth Proportional to 2,284.79, 3,427.18 and 553.42

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Solution

The fourth proportional to 2,284.79, 3,427.18 and 553.42 is: 830.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,284.79 : 3,427.18 = 553.42 : x
  2. Step 2: Convert to fraction form
    2,284.79/3,427.18 = 553.42/x
  3. Step 3: Cross multiply
    2,284.79x = 3,427.18 × 553.42
  4. Step 4: Simplify right side
    2,284.79x = 1,896,660.00
  5. Step 5: Solve for x
    x = 1,896,660.00/2,284.79
  6. Step 6: Final answer
    x = 830.12

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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.