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Finding the Fourth Proportional to 635.21, 876.57 and 373.40

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Solution

The fourth proportional to 635.21, 876.57 and 373.40 is: 515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.21 : 876.57 = 373.40 : x
  2. Step 2: Convert to fraction form
    635.21/876.57 = 373.40/x
  3. Step 3: Cross multiply
    635.21x = 876.57 × 373.40
  4. Step 4: Simplify right side
    635.21x = 327,311.24
  5. Step 5: Solve for x
    x = 327,311.24/635.21
  6. Step 6: Final answer
    x = 515.28

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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.