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Finding the Fourth Proportional to 775.70, 1,070.44 and 444.16

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Solution

The fourth proportional to 775.70, 1,070.44 and 444.16 is: 612.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.70 : 1,070.44 = 444.16 : x
  2. Step 2: Convert to fraction form
    775.70/1,070.44 = 444.16/x
  3. Step 3: Cross multiply
    775.70x = 1,070.44 × 444.16
  4. Step 4: Simplify right side
    775.70x = 475,446.63
  5. Step 5: Solve for x
    x = 475,446.63/775.70
  6. Step 6: Final answer
    x = 612.93

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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.