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Finding the Fourth Proportional to 635.51, 954.21 and 393.05

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Solution

The fourth proportional to 635.51, 954.21 and 393.05 is: 590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.51 : 954.21 = 393.05 : x
  2. Step 2: Convert to fraction form
    635.51/954.21 = 393.05/x
  3. Step 3: Cross multiply
    635.51x = 954.21 × 393.05
  4. Step 4: Simplify right side
    635.51x = 375,052.24
  5. Step 5: Solve for x
    x = 375,052.24/635.51
  6. Step 6: Final answer
    x = 590.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.