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Finding the Fourth Proportional to 369.18, 554.49 and 305.07

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Solution

The fourth proportional to 369.18, 554.49 and 305.07 is: 458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.18 : 554.49 = 305.07 : x
  2. Step 2: Convert to fraction form
    369.18/554.49 = 305.07/x
  3. Step 3: Cross multiply
    369.18x = 554.49 × 305.07
  4. Step 4: Simplify right side
    369.18x = 169,158.26
  5. Step 5: Solve for x
    x = 169,158.26/369.18
  6. Step 6: Final answer
    x = 458.20

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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.