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Finding the Fourth Proportional to 388.33, 583.07 and 259.13

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Solution

The fourth proportional to 388.33, 583.07 and 259.13 is: 389.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.33 : 583.07 = 259.13 : x
  2. Step 2: Convert to fraction form
    388.33/583.07 = 259.13/x
  3. Step 3: Cross multiply
    388.33x = 583.07 × 259.13
  4. Step 4: Simplify right side
    388.33x = 151,091.09
  5. Step 5: Solve for x
    x = 151,091.09/388.33
  6. Step 6: Final answer
    x = 389.08

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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.