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Finding the Fourth Proportional to 270.48, 373.23 and 172.20

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Solution

The fourth proportional to 270.48, 373.23 and 172.20 is: 237.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.48 : 373.23 = 172.20 : x
  2. Step 2: Convert to fraction form
    270.48/373.23 = 172.20/x
  3. Step 3: Cross multiply
    270.48x = 373.23 × 172.20
  4. Step 4: Simplify right side
    270.48x = 64,270.21
  5. Step 5: Solve for x
    x = 64,270.21/270.48
  6. Step 6: Final answer
    x = 237.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.