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Finding the Fourth Proportional to 624.06, 936.51 and 258.85

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Solution

The fourth proportional to 624.06, 936.51 and 258.85 is: 388.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.06 : 936.51 = 258.85 : x
  2. Step 2: Convert to fraction form
    624.06/936.51 = 258.85/x
  3. Step 3: Cross multiply
    624.06x = 936.51 × 258.85
  4. Step 4: Simplify right side
    624.06x = 242,415.61
  5. Step 5: Solve for x
    x = 242,415.61/624.06
  6. Step 6: Final answer
    x = 388.45

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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.