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Finding the Fourth Proportional to 957.43, 1,321.01 and 584.39

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Solution

The fourth proportional to 957.43, 1,321.01 and 584.39 is: 806.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.43 : 1,321.01 = 584.39 : x
  2. Step 2: Convert to fraction form
    957.43/1,321.01 = 584.39/x
  3. Step 3: Cross multiply
    957.43x = 1,321.01 × 584.39
  4. Step 4: Simplify right side
    957.43x = 771,978.43
  5. Step 5: Solve for x
    x = 771,978.43/957.43
  6. Step 6: Final answer
    x = 806.30

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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.