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Finding the Fourth Proportional to 205.16, 307.46 and 96.76

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Solution

The fourth proportional to 205.16, 307.46 and 96.76 is: 145.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.16 : 307.46 = 96.76 : x
  2. Step 2: Convert to fraction form
    205.16/307.46 = 96.76/x
  3. Step 3: Cross multiply
    205.16x = 307.46 × 96.76
  4. Step 4: Simplify right side
    205.16x = 29,749.83
  5. Step 5: Solve for x
    x = 29,749.83/205.16
  6. Step 6: Final answer
    x = 145.01

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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.