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Finding the Fourth Proportional to 809.04, 1,116.16 and 459.68

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Solution

The fourth proportional to 809.04, 1,116.16 and 459.68 is: 634.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    809.04 : 1,116.16 = 459.68 : x
  2. Step 2: Convert to fraction form
    809.04/1,116.16 = 459.68/x
  3. Step 3: Cross multiply
    809.04x = 1,116.16 × 459.68
  4. Step 4: Simplify right side
    809.04x = 513,076.43
  5. Step 5: Solve for x
    x = 513,076.43/809.04
  6. Step 6: Final answer
    x = 634.18

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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.