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Finding the Fourth Proportional to 365.70, 548.76 and 149.40

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Solution

The fourth proportional to 365.70, 548.76 and 149.40 is: 224.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.70 : 548.76 = 149.40 : x
  2. Step 2: Convert to fraction form
    365.70/548.76 = 149.40/x
  3. Step 3: Cross multiply
    365.70x = 548.76 × 149.40
  4. Step 4: Simplify right side
    365.70x = 81,984.74
  5. Step 5: Solve for x
    x = 81,984.74/365.70
  6. Step 6: Final answer
    x = 224.19

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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.