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Finding the Fourth Proportional to 1,347.98, 2,021.99 and 374.09

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Solution

The fourth proportional to 1,347.98, 2,021.99 and 374.09 is: 561.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.98 : 2,021.99 = 374.09 : x
  2. Step 2: Convert to fraction form
    1,347.98/2,021.99 = 374.09/x
  3. Step 3: Cross multiply
    1,347.98x = 2,021.99 × 374.09
  4. Step 4: Simplify right side
    1,347.98x = 756,394.26
  5. Step 5: Solve for x
    x = 756,394.26/1,347.98
  6. Step 6: Final answer
    x = 561.13

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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.