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Finding the Fourth Proportional to 373.48, 514.91 and 321.58

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Solution

The fourth proportional to 373.48, 514.91 and 321.58 is: 443.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.48 : 514.91 = 321.58 : x
  2. Step 2: Convert to fraction form
    373.48/514.91 = 321.58/x
  3. Step 3: Cross multiply
    373.48x = 514.91 × 321.58
  4. Step 4: Simplify right side
    373.48x = 165,584.27
  5. Step 5: Solve for x
    x = 165,584.27/373.48
  6. Step 6: Final answer
    x = 443.36

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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.