Home / 1,056.11-1,583.55-406.76

Finding the Fourth Proportional to 1,056.11, 1,583.55 and 406.76

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Solution

The fourth proportional to 1,056.11, 1,583.55 and 406.76 is: 609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.11 : 1,583.55 = 406.76 : x
  2. Step 2: Convert to fraction form
    1,056.11/1,583.55 = 406.76/x
  3. Step 3: Cross multiply
    1,056.11x = 1,583.55 × 406.76
  4. Step 4: Simplify right side
    1,056.11x = 644,116.88
  5. Step 5: Solve for x
    x = 644,116.88/1,056.11
  6. Step 6: Final answer
    x = 609.90

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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.