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Finding the Fourth Proportional to 467.89, 705.01 and 388.51

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Solution

The fourth proportional to 467.89, 705.01 and 388.51 is: 585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.89 : 705.01 = 388.51 : x
  2. Step 2: Convert to fraction form
    467.89/705.01 = 388.51/x
  3. Step 3: Cross multiply
    467.89x = 705.01 × 388.51
  4. Step 4: Simplify right side
    467.89x = 273,903.44
  5. Step 5: Solve for x
    x = 273,903.44/467.89
  6. Step 6: Final answer
    x = 585.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.