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Finding the Fourth Proportional to 365.25, 548.00 and 148.71

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Solution

The fourth proportional to 365.25, 548.00 and 148.71 is: 223.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.25 : 548.00 = 148.71 : x
  2. Step 2: Convert to fraction form
    365.25/548.00 = 148.71/x
  3. Step 3: Cross multiply
    365.25x = 548.00 × 148.71
  4. Step 4: Simplify right side
    365.25x = 81,492.34
  5. Step 5: Solve for x
    x = 81,492.34/365.25
  6. Step 6: Final answer
    x = 223.11

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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.