Home / 1,371.12-2,056.96-446.76

Finding the Fourth Proportional to 1,371.12, 2,056.96 and 446.76

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Solution

The fourth proportional to 1,371.12, 2,056.96 and 446.76 is: 670.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.12 : 2,056.96 = 446.76 : x
  2. Step 2: Convert to fraction form
    1,371.12/2,056.96 = 446.76/x
  3. Step 3: Cross multiply
    1,371.12x = 2,056.96 × 446.76
  4. Step 4: Simplify right side
    1,371.12x = 918,967.45
  5. Step 5: Solve for x
    x = 918,967.45/1,371.12
  6. Step 6: Final answer
    x = 670.23

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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.