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Finding the Fourth Proportional to 635.00, 876.16 and 386.18

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Solution

The fourth proportional to 635.00, 876.16 and 386.18 is: 532.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.00 : 876.16 = 386.18 : x
  2. Step 2: Convert to fraction form
    635.00/876.16 = 386.18/x
  3. Step 3: Cross multiply
    635.00x = 876.16 × 386.18
  4. Step 4: Simplify right side
    635.00x = 338,349.16
  5. Step 5: Solve for x
    x = 338,349.16/635.00
  6. Step 6: Final answer
    x = 532.84

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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.