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Finding the Fourth Proportional to 173.28, 260 and 65.16

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Solution

The fourth proportional to 173.28, 260 and 65.16 is: 97.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.28 : 260 = 65.16 : x
  2. Step 2: Convert to fraction form
    173.28/260 = 65.16/x
  3. Step 3: Cross multiply
    173.28x = 260 × 65.16
  4. Step 4: Simplify right side
    173.28x = 16,941.60
  5. Step 5: Solve for x
    x = 16,941.60/173.28
  6. Step 6: Final answer
    x = 97.77

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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.