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Finding the Fourth Proportional to 738.06, 1,018.62 and 443.52

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Solution

The fourth proportional to 738.06, 1,018.62 and 443.52 is: 612.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.06 : 1,018.62 = 443.52 : x
  2. Step 2: Convert to fraction form
    738.06/1,018.62 = 443.52/x
  3. Step 3: Cross multiply
    738.06x = 1,018.62 × 443.52
  4. Step 4: Simplify right side
    738.06x = 451,778.34
  5. Step 5: Solve for x
    x = 451,778.34/738.06
  6. Step 6: Final answer
    x = 612.12

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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.