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Finding the Fourth Proportional to 302.99, 453.87 and 259.65

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Solution

The fourth proportional to 302.99, 453.87 and 259.65 is: 388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.99 : 453.87 = 259.65 : x
  2. Step 2: Convert to fraction form
    302.99/453.87 = 259.65/x
  3. Step 3: Cross multiply
    302.99x = 453.87 × 259.65
  4. Step 4: Simplify right side
    302.99x = 117,847.35
  5. Step 5: Solve for x
    x = 117,847.35/302.99
  6. Step 6: Final answer
    x = 388.95

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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.