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Finding the Fourth Proportional to 653.77, 980.20 and 306.92

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Solution

The fourth proportional to 653.77, 980.20 and 306.92 is: 460.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.77 : 980.20 = 306.92 : x
  2. Step 2: Convert to fraction form
    653.77/980.20 = 306.92/x
  3. Step 3: Cross multiply
    653.77x = 980.20 × 306.92
  4. Step 4: Simplify right side
    653.77x = 300,841.45
  5. Step 5: Solve for x
    x = 300,841.45/653.77
  6. Step 6: Final answer
    x = 460.16

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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.