Home / 1,323.34-1,984.94-398.93

Finding the Fourth Proportional to 1,323.34, 1,984.94 and 398.93

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Solution

The fourth proportional to 1,323.34, 1,984.94 and 398.93 is: 598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.34 : 1,984.94 = 398.93 : x
  2. Step 2: Convert to fraction form
    1,323.34/1,984.94 = 398.93/x
  3. Step 3: Cross multiply
    1,323.34x = 1,984.94 × 398.93
  4. Step 4: Simplify right side
    1,323.34x = 791,841.69
  5. Step 5: Solve for x
    x = 791,841.69/1,323.34
  6. Step 6: Final answer
    x = 598.37

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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.