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Finding the Fourth Proportional to 1,493.44, 2,061 and 830.42

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Solution

The fourth proportional to 1,493.44, 2,061 and 830.42 is: 1,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,493.44 : 2,061 = 830.42 : x
  2. Step 2: Convert to fraction form
    1,493.44/2,061 = 830.42/x
  3. Step 3: Cross multiply
    1,493.44x = 2,061 × 830.42
  4. Step 4: Simplify right side
    1,493.44x = 1,711,495.62
  5. Step 5: Solve for x
    x = 1,711,495.62/1,493.44
  6. Step 6: Final answer
    x = 1,146.01

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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.