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Finding the Fourth Proportional to 857.36, 1,182.68 and 591.77

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Solution

The fourth proportional to 857.36, 1,182.68 and 591.77 is: 816.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    857.36 : 1,182.68 = 591.77 : x
  2. Step 2: Convert to fraction form
    857.36/1,182.68 = 591.77/x
  3. Step 3: Cross multiply
    857.36x = 1,182.68 × 591.77
  4. Step 4: Simplify right side
    857.36x = 699,865.67
  5. Step 5: Solve for x
    x = 699,865.67/857.36
  6. Step 6: Final answer
    x = 816.31

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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.