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Finding the Fourth Proportional to 739.24, 1,020.18 and 444.64

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Solution

The fourth proportional to 739.24, 1,020.18 and 444.64 is: 613.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.24 : 1,020.18 = 444.64 : x
  2. Step 2: Convert to fraction form
    739.24/1,020.18 = 444.64/x
  3. Step 3: Cross multiply
    739.24x = 1,020.18 × 444.64
  4. Step 4: Simplify right side
    739.24x = 453,612.84
  5. Step 5: Solve for x
    x = 453,612.84/739.24
  6. Step 6: Final answer
    x = 613.62

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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.