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Finding the Fourth Proportional to 857.49, 1,285.44 and 466.92

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Solution

The fourth proportional to 857.49, 1,285.44 and 466.92 is: 699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    857.49 : 1,285.44 = 466.92 : x
  2. Step 2: Convert to fraction form
    857.49/1,285.44 = 466.92/x
  3. Step 3: Cross multiply
    857.49x = 1,285.44 × 466.92
  4. Step 4: Simplify right side
    857.49x = 600,197.64
  5. Step 5: Solve for x
    x = 600,197.64/857.49
  6. Step 6: Final answer
    x = 699.95

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1.5x scale

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.