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Finding the Fourth Proportional to 373.12, 556.80 and 329.92

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Solution

The fourth proportional to 373.12, 556.80 and 329.92 is: 492.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.12 : 556.80 = 329.92 : x
  2. Step 2: Convert to fraction form
    373.12/556.80 = 329.92/x
  3. Step 3: Cross multiply
    373.12x = 556.80 × 329.92
  4. Step 4: Simplify right side
    373.12x = 183,699.46
  5. Step 5: Solve for x
    x = 183,699.46/373.12
  6. Step 6: Final answer
    x = 492.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.