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Finding the Fourth Proportional to 322.48, 483.60 and 130

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Solution

The fourth proportional to 322.48, 483.60 and 130 is: 194.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.48 : 483.60 = 130 : x
  2. Step 2: Convert to fraction form
    322.48/483.60 = 130/x
  3. Step 3: Cross multiply
    322.48x = 483.60 × 130
  4. Step 4: Simplify right side
    322.48x = 62,868
  5. Step 5: Solve for x
    x = 62,868/322.48
  6. Step 6: Final answer
    x = 194.95

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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.