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Finding the Fourth Proportional to 357.03, 535.47 and 161.95

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Solution

The fourth proportional to 357.03, 535.47 and 161.95 is: 242.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.03 : 535.47 = 161.95 : x
  2. Step 2: Convert to fraction form
    357.03/535.47 = 161.95/x
  3. Step 3: Cross multiply
    357.03x = 535.47 × 161.95
  4. Step 4: Simplify right side
    357.03x = 86,719.37
  5. Step 5: Solve for x
    x = 86,719.37/357.03
  6. Step 6: Final answer
    x = 242.89

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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.