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Finding the Fourth Proportional to 857.03, 1,182.87 and 577.44

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Solution

The fourth proportional to 857.03, 1,182.87 and 577.44 is: 796.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    857.03 : 1,182.87 = 577.44 : x
  2. Step 2: Convert to fraction form
    857.03/1,182.87 = 577.44/x
  3. Step 3: Cross multiply
    857.03x = 1,182.87 × 577.44
  4. Step 4: Simplify right side
    857.03x = 683,036.45
  5. Step 5: Solve for x
    x = 683,036.45/857.03
  6. Step 6: Final answer
    x = 796.99

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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.