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Finding the Fourth Proportional to 796.34, 1,194.84 and 430.70

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Solution

The fourth proportional to 796.34, 1,194.84 and 430.70 is: 646.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.34 : 1,194.84 = 430.70 : x
  2. Step 2: Convert to fraction form
    796.34/1,194.84 = 430.70/x
  3. Step 3: Cross multiply
    796.34x = 1,194.84 × 430.70
  4. Step 4: Simplify right side
    796.34x = 514,617.59
  5. Step 5: Solve for x
    x = 514,617.59/796.34
  6. Step 6: Final answer
    x = 646.23

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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.