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Finding the Fourth Proportional to 635.35, 876.95 and 569.74

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Solution

The fourth proportional to 635.35, 876.95 and 569.74 is: 786.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.35 : 876.95 = 569.74 : x
  2. Step 2: Convert to fraction form
    635.35/876.95 = 569.74/x
  3. Step 3: Cross multiply
    635.35x = 876.95 × 569.74
  4. Step 4: Simplify right side
    635.35x = 499,633.49
  5. Step 5: Solve for x
    x = 499,633.49/635.35
  6. Step 6: Final answer
    x = 786.39

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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.