Home / 1,056.20-1,582.44-644.36

Finding the Fourth Proportional to 1,056.20, 1,582.44 and 644.36

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Solution

The fourth proportional to 1,056.20, 1,582.44 and 644.36 is: 965.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.20 : 1,582.44 = 644.36 : x
  2. Step 2: Convert to fraction form
    1,056.20/1,582.44 = 644.36/x
  3. Step 3: Cross multiply
    1,056.20x = 1,582.44 × 644.36
  4. Step 4: Simplify right side
    1,056.20x = 1,019,661.04
  5. Step 5: Solve for x
    x = 1,019,661.04/1,056.20
  6. Step 6: Final answer
    x = 965.41

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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.