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Finding the Fourth Proportional to 377.54, 565.80 and 172.06

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Solution

The fourth proportional to 377.54, 565.80 and 172.06 is: 257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.54 : 565.80 = 172.06 : x
  2. Step 2: Convert to fraction form
    377.54/565.80 = 172.06/x
  3. Step 3: Cross multiply
    377.54x = 565.80 × 172.06
  4. Step 4: Simplify right side
    377.54x = 97,351.55
  5. Step 5: Solve for x
    x = 97,351.55/377.54
  6. Step 6: Final answer
    x = 257.86

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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.