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Finding the Fourth Proportional to 373.74, 561.48 and 219.77

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Solution

The fourth proportional to 373.74, 561.48 and 219.77 is: 330.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.74 : 561.48 = 219.77 : x
  2. Step 2: Convert to fraction form
    373.74/561.48 = 219.77/x
  3. Step 3: Cross multiply
    373.74x = 561.48 × 219.77
  4. Step 4: Simplify right side
    373.74x = 123,395.36
  5. Step 5: Solve for x
    x = 123,395.36/373.74
  6. Step 6: Final answer
    x = 330.16

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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.