Home / 1,371.21-2,056.68-446.60

Finding the Fourth Proportional to 1,371.21, 2,056.68 and 446.60

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Solution

The fourth proportional to 1,371.21, 2,056.68 and 446.60 is: 669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.21 : 2,056.68 = 446.60 : x
  2. Step 2: Convert to fraction form
    1,371.21/2,056.68 = 446.60/x
  3. Step 3: Cross multiply
    1,371.21x = 2,056.68 × 446.60
  4. Step 4: Simplify right side
    1,371.21x = 918,503.00
  5. Step 5: Solve for x
    x = 918,503.00/1,371.21
  6. Step 6: Final answer
    x = 669.85

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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.