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Finding the Fourth Proportional to 834.76, 1,244.57 and 761.05

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Solution

The fourth proportional to 834.76, 1,244.57 and 761.05 is: 1,134.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.76 : 1,244.57 = 761.05 : x
  2. Step 2: Convert to fraction form
    834.76/1,244.57 = 761.05/x
  3. Step 3: Cross multiply
    834.76x = 1,244.57 × 761.05
  4. Step 4: Simplify right side
    834.76x = 947,180.00
  5. Step 5: Solve for x
    x = 947,180.00/834.76
  6. Step 6: Final answer
    x = 1,134.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.