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Finding the Fourth Proportional to 386.93, 581.25 and 335.06

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Solution

The fourth proportional to 386.93, 581.25 and 335.06 is: 503.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.93 : 581.25 = 335.06 : x
  2. Step 2: Convert to fraction form
    386.93/581.25 = 335.06/x
  3. Step 3: Cross multiply
    386.93x = 581.25 × 335.06
  4. Step 4: Simplify right side
    386.93x = 194,750.72
  5. Step 5: Solve for x
    x = 194,750.72/386.93
  6. Step 6: Final answer
    x = 503.33

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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.