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Finding the Fourth Proportional to 632.99, 949.85 and 355.56

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Solution

The fourth proportional to 632.99, 949.85 and 355.56 is: 533.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.99 : 949.85 = 355.56 : x
  2. Step 2: Convert to fraction form
    632.99/949.85 = 355.56/x
  3. Step 3: Cross multiply
    632.99x = 949.85 × 355.56
  4. Step 4: Simplify right side
    632.99x = 337,726.89
  5. Step 5: Solve for x
    x = 337,726.89/632.99
  6. Step 6: Final answer
    x = 533.55

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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.