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Finding the Fourth Proportional to 738.32, 1,019.04 and 443.60

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Solution

The fourth proportional to 738.32, 1,019.04 and 443.60 is: 612.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.32 : 1,019.04 = 443.60 : x
  2. Step 2: Convert to fraction form
    738.32/1,019.04 = 443.60/x
  3. Step 3: Cross multiply
    738.32x = 1,019.04 × 443.60
  4. Step 4: Simplify right side
    738.32x = 452,046.14
  5. Step 5: Solve for x
    x = 452,046.14/738.32
  6. Step 6: Final answer
    x = 612.26

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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.