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Finding the Fourth Proportional to 620.15, 929.67 and 235.13

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Solution

The fourth proportional to 620.15, 929.67 and 235.13 is: 352.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.15 : 929.67 = 235.13 : x
  2. Step 2: Convert to fraction form
    620.15/929.67 = 235.13/x
  3. Step 3: Cross multiply
    620.15x = 929.67 × 235.13
  4. Step 4: Simplify right side
    620.15x = 218,588.66
  5. Step 5: Solve for x
    x = 218,588.66/620.15
  6. Step 6: Final answer
    x = 352.48

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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.