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Finding the Fourth Proportional to 816.06, 1,126.15 and 443.04

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Solution

The fourth proportional to 816.06, 1,126.15 and 443.04 is: 611.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    816.06 : 1,126.15 = 443.04 : x
  2. Step 2: Convert to fraction form
    816.06/1,126.15 = 443.04/x
  3. Step 3: Cross multiply
    816.06x = 1,126.15 × 443.04
  4. Step 4: Simplify right side
    816.06x = 498,929.50
  5. Step 5: Solve for x
    x = 498,929.50/816.06
  6. Step 6: Final answer
    x = 611.39

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Half scale
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Double scale
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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.