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Finding the Fourth Proportional to 365, 547.74 and 172.64

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Solution

The fourth proportional to 365, 547.74 and 172.64 is: 259.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    365 : 547.74 = 172.64 : x
  2. Step 2: Convert to fraction form
    365/547.74 = 172.64/x
  3. Step 3: Cross multiply
    365x = 547.74 × 172.64
  4. Step 4: Simplify right side
    365x = 94,561.83
  5. Step 5: Solve for x
    x = 94,561.83/365
  6. Step 6: Final answer
    x = 259.07

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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.