Home / 1,056.28-1,584.06-439.64

Finding the Fourth Proportional to 1,056.28, 1,584.06 and 439.64

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Solution

The fourth proportional to 1,056.28, 1,584.06 and 439.64 is: 659.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.28 : 1,584.06 = 439.64 : x
  2. Step 2: Convert to fraction form
    1,056.28/1,584.06 = 439.64/x
  3. Step 3: Cross multiply
    1,056.28x = 1,584.06 × 439.64
  4. Step 4: Simplify right side
    1,056.28x = 696,416.14
  5. Step 5: Solve for x
    x = 696,416.14/1,056.28
  6. Step 6: Final answer
    x = 659.31

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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.