Home / 1,056.18-1,584.23-439.72

Finding the Fourth Proportional to 1,056.18, 1,584.23 and 439.72

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Solution

The fourth proportional to 1,056.18, 1,584.23 and 439.72 is: 659.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.18 : 1,584.23 = 439.72 : x
  2. Step 2: Convert to fraction form
    1,056.18/1,584.23 = 439.72/x
  3. Step 3: Cross multiply
    1,056.18x = 1,584.23 × 439.72
  4. Step 4: Simplify right side
    1,056.18x = 696,609.69
  5. Step 5: Solve for x
    x = 696,609.69/1,056.18
  6. Step 6: Final answer
    x = 659.56

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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.