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Finding the Fourth Proportional to 388.67, 583.61 and 371.35

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Solution

The fourth proportional to 388.67, 583.61 and 371.35 is: 557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.67 : 583.61 = 371.35 : x
  2. Step 2: Convert to fraction form
    388.67/583.61 = 371.35/x
  3. Step 3: Cross multiply
    388.67x = 583.61 × 371.35
  4. Step 4: Simplify right side
    388.67x = 216,722.45
  5. Step 5: Solve for x
    x = 216,722.45/388.67
  6. Step 6: Final answer
    x = 557.61

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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.