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Finding the Fourth Proportional to 775.89, 1,070.67 and 444.36

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Solution

The fourth proportional to 775.89, 1,070.67 and 444.36 is: 613.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.89 : 1,070.67 = 444.36 : x
  2. Step 2: Convert to fraction form
    775.89/1,070.67 = 444.36/x
  3. Step 3: Cross multiply
    775.89x = 1,070.67 × 444.36
  4. Step 4: Simplify right side
    775.89x = 475,762.92
  5. Step 5: Solve for x
    x = 475,762.92/775.89
  6. Step 6: Final answer
    x = 613.18

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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.