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Finding the Fourth Proportional to 1,670.99, 2,306.88 and 1,008

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Solution

The fourth proportional to 1,670.99, 2,306.88 and 1,008 is: 1,391.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.99 : 2,306.88 = 1,008 : x
  2. Step 2: Convert to fraction form
    1,670.99/2,306.88 = 1,008/x
  3. Step 3: Cross multiply
    1,670.99x = 2,306.88 × 1,008
  4. Step 4: Simplify right side
    1,670.99x = 2,325,335.04
  5. Step 5: Solve for x
    x = 2,325,335.04/1,670.99
  6. Step 6: Final answer
    x = 1,391.59

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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.