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Finding the Fourth Proportional to 635.94, 955.40 and 392.67

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Solution

The fourth proportional to 635.94, 955.40 and 392.67 is: 589.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.94 : 955.40 = 392.67 : x
  2. Step 2: Convert to fraction form
    635.94/955.40 = 392.67/x
  3. Step 3: Cross multiply
    635.94x = 955.40 × 392.67
  4. Step 4: Simplify right side
    635.94x = 375,154.95
  5. Step 5: Solve for x
    x = 375,154.95/635.94
  6. Step 6: Final answer
    x = 589.92

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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.