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Finding the Fourth Proportional to 635.79, 877.37 and 356.04

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Solution

The fourth proportional to 635.79, 877.37 and 356.04 is: 491.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.79 : 877.37 = 356.04 : x
  2. Step 2: Convert to fraction form
    635.79/877.37 = 356.04/x
  3. Step 3: Cross multiply
    635.79x = 877.37 × 356.04
  4. Step 4: Simplify right side
    635.79x = 312,378.81
  5. Step 5: Solve for x
    x = 312,378.81/635.79
  6. Step 6: Final answer
    x = 491.32

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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.