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Finding the Fourth Proportional to 634.76, 876.02 and 355.10

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Solution

The fourth proportional to 634.76, 876.02 and 355.10 is: 490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.76 : 876.02 = 355.10 : x
  2. Step 2: Convert to fraction form
    634.76/876.02 = 355.10/x
  3. Step 3: Cross multiply
    634.76x = 876.02 × 355.10
  4. Step 4: Simplify right side
    634.76x = 311,074.70
  5. Step 5: Solve for x
    x = 311,074.70/634.76
  6. Step 6: Final answer
    x = 490.07

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