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Finding the Fourth Proportional to 843.63, 1,164.21 and 494.32

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Solution

The fourth proportional to 843.63, 1,164.21 and 494.32 is: 682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.63 : 1,164.21 = 494.32 : x
  2. Step 2: Convert to fraction form
    843.63/1,164.21 = 494.32/x
  3. Step 3: Cross multiply
    843.63x = 1,164.21 × 494.32
  4. Step 4: Simplify right side
    843.63x = 575,492.29
  5. Step 5: Solve for x
    x = 575,492.29/843.63
  6. Step 6: Final answer
    x = 682.16

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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.