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Finding the Fourth Proportional to 699.22, 1,048.83 and 374.14

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Solution

The fourth proportional to 699.22, 1,048.83 and 374.14 is: 561.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.22 : 1,048.83 = 374.14 : x
  2. Step 2: Convert to fraction form
    699.22/1,048.83 = 374.14/x
  3. Step 3: Cross multiply
    699.22x = 1,048.83 × 374.14
  4. Step 4: Simplify right side
    699.22x = 392,409.26
  5. Step 5: Solve for x
    x = 392,409.26/699.22
  6. Step 6: Final answer
    x = 561.21

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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.