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Finding the Fourth Proportional to 1,601.58, 2,210.88 and 1,208.70

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Solution

The fourth proportional to 1,601.58, 2,210.88 and 1,208.70 is: 1,668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.58 : 2,210.88 = 1,208.70 : x
  2. Step 2: Convert to fraction form
    1,601.58/2,210.88 = 1,208.70/x
  3. Step 3: Cross multiply
    1,601.58x = 2,210.88 × 1,208.70
  4. Step 4: Simplify right side
    1,601.58x = 2,672,290.66
  5. Step 5: Solve for x
    x = 2,672,290.66/1,601.58
  6. Step 6: Final answer
    x = 1,668.53

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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.