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Finding the Fourth Proportional to 834.08, 1,151.51 and 554.69

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Solution

The fourth proportional to 834.08, 1,151.51 and 554.69 is: 765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.08 : 1,151.51 = 554.69 : x
  2. Step 2: Convert to fraction form
    834.08/1,151.51 = 554.69/x
  3. Step 3: Cross multiply
    834.08x = 1,151.51 × 554.69
  4. Step 4: Simplify right side
    834.08x = 638,731.19
  5. Step 5: Solve for x
    x = 638,731.19/834.08
  6. Step 6: Final answer
    x = 765.80

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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.