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Finding the Fourth Proportional to 775.86, 1,070.60 and 444.27

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Solution

The fourth proportional to 775.86, 1,070.60 and 444.27 is: 613.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.86 : 1,070.60 = 444.27 : x
  2. Step 2: Convert to fraction form
    775.86/1,070.60 = 444.27/x
  3. Step 3: Cross multiply
    775.86x = 1,070.60 × 444.27
  4. Step 4: Simplify right side
    775.86x = 475,631.67
  5. Step 5: Solve for x
    x = 475,631.67/775.86
  6. Step 6: Final answer
    x = 613.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.