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Finding the Fourth Proportional to 775.85, 1,070.73 and 444.38

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Solution

The fourth proportional to 775.85, 1,070.73 and 444.38 is: 613.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.85 : 1,070.73 = 444.38 : x
  2. Step 2: Convert to fraction form
    775.85/1,070.73 = 444.38/x
  3. Step 3: Cross multiply
    775.85x = 1,070.73 × 444.38
  4. Step 4: Simplify right side
    775.85x = 475,811.00
  5. Step 5: Solve for x
    x = 475,811.00/775.85
  6. Step 6: Final answer
    x = 613.28

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1.5x scale

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.