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Finding the Fourth Proportional to 635.80, 953.64 and 245.80

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Solution

The fourth proportional to 635.80, 953.64 and 245.80 is: 368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.80 : 953.64 = 245.80 : x
  2. Step 2: Convert to fraction form
    635.80/953.64 = 245.80/x
  3. Step 3: Cross multiply
    635.80x = 953.64 × 245.80
  4. Step 4: Simplify right side
    635.80x = 234,404.71
  5. Step 5: Solve for x
    x = 234,404.71/635.80
  6. Step 6: Final answer
    x = 368.68

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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.