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Finding the Fourth Proportional to 794.51, 1,191.63 and 217.25

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Solution

The fourth proportional to 794.51, 1,191.63 and 217.25 is: 325.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.51 : 1,191.63 = 217.25 : x
  2. Step 2: Convert to fraction form
    794.51/1,191.63 = 217.25/x
  3. Step 3: Cross multiply
    794.51x = 1,191.63 × 217.25
  4. Step 4: Simplify right side
    794.51x = 258,881.62
  5. Step 5: Solve for x
    x = 258,881.62/794.51
  6. Step 6: Final answer
    x = 325.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.