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Finding the Fourth Proportional to 357.66, 536.33 and 129.50

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Solution

The fourth proportional to 357.66, 536.33 and 129.50 is: 194.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.66 : 536.33 = 129.50 : x
  2. Step 2: Convert to fraction form
    357.66/536.33 = 129.50/x
  3. Step 3: Cross multiply
    357.66x = 536.33 × 129.50
  4. Step 4: Simplify right side
    357.66x = 69,454.74
  5. Step 5: Solve for x
    x = 69,454.74/357.66
  6. Step 6: Final answer
    x = 194.19

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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.