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Finding the Fourth Proportional to 635.90, 877.40 and 373.84

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Solution

The fourth proportional to 635.90, 877.40 and 373.84 is: 515.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.90 : 877.40 = 373.84 : x
  2. Step 2: Convert to fraction form
    635.90/877.40 = 373.84/x
  3. Step 3: Cross multiply
    635.90x = 877.40 × 373.84
  4. Step 4: Simplify right side
    635.90x = 328,007.22
  5. Step 5: Solve for x
    x = 328,007.22/635.90
  6. Step 6: Final answer
    x = 515.82

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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.