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Finding the Fourth Proportional to 369.52, 556.76 and 330.22

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Solution

The fourth proportional to 369.52, 556.76 and 330.22 is: 497.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.52 : 556.76 = 330.22 : x
  2. Step 2: Convert to fraction form
    369.52/556.76 = 330.22/x
  3. Step 3: Cross multiply
    369.52x = 556.76 × 330.22
  4. Step 4: Simplify right side
    369.52x = 183,853.29
  5. Step 5: Solve for x
    x = 183,853.29/369.52
  6. Step 6: Final answer
    x = 497.55

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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.