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Finding the Fourth Proportional to 698.96, 1,048.92 and 374.48

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Solution

The fourth proportional to 698.96, 1,048.92 and 374.48 is: 561.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.96 : 1,048.92 = 374.48 : x
  2. Step 2: Convert to fraction form
    698.96/1,048.92 = 374.48/x
  3. Step 3: Cross multiply
    698.96x = 1,048.92 × 374.48
  4. Step 4: Simplify right side
    698.96x = 392,799.56
  5. Step 5: Solve for x
    x = 392,799.56/698.96
  6. Step 6: Final answer
    x = 561.98

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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.