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Finding the Fourth Proportional to 373.19, 561.84 and 330.09

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Solution

The fourth proportional to 373.19, 561.84 and 330.09 is: 496.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.19 : 561.84 = 330.09 : x
  2. Step 2: Convert to fraction form
    373.19/561.84 = 330.09/x
  3. Step 3: Cross multiply
    373.19x = 561.84 × 330.09
  4. Step 4: Simplify right side
    373.19x = 185,457.77
  5. Step 5: Solve for x
    x = 185,457.77/373.19
  6. Step 6: Final answer
    x = 496.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.