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Finding the Fourth Proportional to 857.63, 1,183.23 and 526.14

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Solution

The fourth proportional to 857.63, 1,183.23 and 526.14 is: 725.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    857.63 : 1,183.23 = 526.14 : x
  2. Step 2: Convert to fraction form
    857.63/1,183.23 = 526.14/x
  3. Step 3: Cross multiply
    857.63x = 1,183.23 × 526.14
  4. Step 4: Simplify right side
    857.63x = 622,544.63
  5. Step 5: Solve for x
    x = 622,544.63/857.63
  6. Step 6: Final answer
    x = 725.89

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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.