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Finding the Fourth Proportional to 394.07, 587.66 and 372.50

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Solution

The fourth proportional to 394.07, 587.66 and 372.50 is: 555.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.07 : 587.66 = 372.50 : x
  2. Step 2: Convert to fraction form
    394.07/587.66 = 372.50/x
  3. Step 3: Cross multiply
    394.07x = 587.66 × 372.50
  4. Step 4: Simplify right side
    394.07x = 218,900.75
  5. Step 5: Solve for x
    x = 218,900.75/394.07
  6. Step 6: Final answer
    x = 555.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.