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Finding the Fourth Proportional to 834.65, 1,151.91 and 480.59

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Solution

The fourth proportional to 834.65, 1,151.91 and 480.59 is: 663.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.65 : 1,151.91 = 480.59 : x
  2. Step 2: Convert to fraction form
    834.65/1,151.91 = 480.59/x
  3. Step 3: Cross multiply
    834.65x = 1,151.91 × 480.59
  4. Step 4: Simplify right side
    834.65x = 553,588.26
  5. Step 5: Solve for x
    x = 553,588.26/834.65
  6. Step 6: Final answer
    x = 663.26

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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.