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Finding the Fourth Proportional to 264.05, 395.63 and 171.40

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Solution

The fourth proportional to 264.05, 395.63 and 171.40 is: 256.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.05 : 395.63 = 171.40 : x
  2. Step 2: Convert to fraction form
    264.05/395.63 = 171.40/x
  3. Step 3: Cross multiply
    264.05x = 395.63 × 171.40
  4. Step 4: Simplify right side
    264.05x = 67,809.14
  5. Step 5: Solve for x
    x = 67,809.14/264.05
  6. Step 6: Final answer
    x = 256.80

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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.