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Finding the Fourth Proportional to 808.93, 1,116.29 and 459.61

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Solution

The fourth proportional to 808.93, 1,116.29 and 459.61 is: 634.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.93 : 1,116.29 = 459.61 : x
  2. Step 2: Convert to fraction form
    808.93/1,116.29 = 459.61/x
  3. Step 3: Cross multiply
    808.93x = 1,116.29 × 459.61
  4. Step 4: Simplify right side
    808.93x = 513,055.75
  5. Step 5: Solve for x
    x = 513,055.75/808.93
  6. Step 6: Final answer
    x = 634.24

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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.