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Finding the Fourth Proportional to 388.42, 584.74 and 297.52

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Solution

The fourth proportional to 388.42, 584.74 and 297.52 is: 447.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.42 : 584.74 = 297.52 : x
  2. Step 2: Convert to fraction form
    388.42/584.74 = 297.52/x
  3. Step 3: Cross multiply
    388.42x = 584.74 × 297.52
  4. Step 4: Simplify right side
    388.42x = 173,973.00
  5. Step 5: Solve for x
    x = 173,973.00/388.42
  6. Step 6: Final answer
    x = 447.90

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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.