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Finding the Fourth Proportional to 369.05, 553.95 and 304.72

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Solution

The fourth proportional to 369.05, 553.95 and 304.72 is: 457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.05 : 553.95 = 304.72 : x
  2. Step 2: Convert to fraction form
    369.05/553.95 = 304.72/x
  3. Step 3: Cross multiply
    369.05x = 553.95 × 304.72
  4. Step 4: Simplify right side
    369.05x = 168,795.35
  5. Step 5: Solve for x
    x = 168,795.35/369.05
  6. Step 6: Final answer
    x = 457.38

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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.