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Finding the Fourth Proportional to 388.46, 583.07 and 302.73

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Solution

The fourth proportional to 388.46, 583.07 and 302.73 is: 454.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.46 : 583.07 = 302.73 : x
  2. Step 2: Convert to fraction form
    388.46/583.07 = 302.73/x
  3. Step 3: Cross multiply
    388.46x = 583.07 × 302.73
  4. Step 4: Simplify right side
    388.46x = 176,512.78
  5. Step 5: Solve for x
    x = 176,512.78/388.46
  6. Step 6: Final answer
    x = 454.39

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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.