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Finding the Fourth Proportional to 365.61, 548.61 and 284.61

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Solution

The fourth proportional to 365.61, 548.61 and 284.61 is: 427.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.61 : 548.61 = 284.61 : x
  2. Step 2: Convert to fraction form
    365.61/548.61 = 284.61/x
  3. Step 3: Cross multiply
    365.61x = 548.61 × 284.61
  4. Step 4: Simplify right side
    365.61x = 156,139.89
  5. Step 5: Solve for x
    x = 156,139.89/365.61
  6. Step 6: Final answer
    x = 427.07

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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.