Home / 1,518.30-2,277.54-422.64

Finding the Fourth Proportional to 1,518.30, 2,277.54 and 422.64

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Solution

The fourth proportional to 1,518.30, 2,277.54 and 422.64 is: 633.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.30 : 2,277.54 = 422.64 : x
  2. Step 2: Convert to fraction form
    1,518.30/2,277.54 = 422.64/x
  3. Step 3: Cross multiply
    1,518.30x = 2,277.54 × 422.64
  4. Step 4: Simplify right side
    1,518.30x = 962,579.51
  5. Step 5: Solve for x
    x = 962,579.51/1,518.30
  6. Step 6: Final answer
    x = 633.99

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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.