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Finding the Fourth Proportional to 834.63, 1,151.64 and 480.48

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Solution

The fourth proportional to 834.63, 1,151.64 and 480.48 is: 662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.63 : 1,151.64 = 480.48 : x
  2. Step 2: Convert to fraction form
    834.63/1,151.64 = 480.48/x
  3. Step 3: Cross multiply
    834.63x = 1,151.64 × 480.48
  4. Step 4: Simplify right side
    834.63x = 553,339.99
  5. Step 5: Solve for x
    x = 553,339.99/834.63
  6. Step 6: Final answer
    x = 662.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.