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Finding the Fourth Proportional to 636.84, 955.55 and 377.36

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Solution

The fourth proportional to 636.84, 955.55 and 377.36 is: 566.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.84 : 955.55 = 377.36 : x
  2. Step 2: Convert to fraction form
    636.84/955.55 = 377.36/x
  3. Step 3: Cross multiply
    636.84x = 955.55 × 377.36
  4. Step 4: Simplify right side
    636.84x = 360,582.51
  5. Step 5: Solve for x
    x = 360,582.51/636.84
  6. Step 6: Final answer
    x = 566.21

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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.