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Finding the Fourth Proportional to 834.05, 1,151.55 and 554.83

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Solution

The fourth proportional to 834.05, 1,151.55 and 554.83 is: 766.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.05 : 1,151.55 = 554.83 : x
  2. Step 2: Convert to fraction form
    834.05/1,151.55 = 554.83/x
  3. Step 3: Cross multiply
    834.05x = 1,151.55 × 554.83
  4. Step 4: Simplify right side
    834.05x = 638,905.95
  5. Step 5: Solve for x
    x = 638,905.95/834.05
  6. Step 6: Final answer
    x = 766.03

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1.5x scale

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.