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Finding the Fourth Proportional to 1,446.58, 1,995.49 and 857.01

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Solution

The fourth proportional to 1,446.58, 1,995.49 and 857.01 is: 1,182.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.58 : 1,995.49 = 857.01 : x
  2. Step 2: Convert to fraction form
    1,446.58/1,995.49 = 857.01/x
  3. Step 3: Cross multiply
    1,446.58x = 1,995.49 × 857.01
  4. Step 4: Simplify right side
    1,446.58x = 1,710,140.62
  5. Step 5: Solve for x
    x = 1,710,140.62/1,446.58
  6. Step 6: Final answer
    x = 1,182.20

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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.