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Finding the Fourth Proportional to 635.68, 876.95 and 383.71

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Solution

The fourth proportional to 635.68, 876.95 and 383.71 is: 529.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.68 : 876.95 = 383.71 : x
  2. Step 2: Convert to fraction form
    635.68/876.95 = 383.71/x
  3. Step 3: Cross multiply
    635.68x = 876.95 × 383.71
  4. Step 4: Simplify right side
    635.68x = 336,494.48
  5. Step 5: Solve for x
    x = 336,494.48/635.68
  6. Step 6: Final answer
    x = 529.35

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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.