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Finding the Fourth Proportional to 614.28, 848.06 and 489.54

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Solution

The fourth proportional to 614.28, 848.06 and 489.54 is: 675.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.28 : 848.06 = 489.54 : x
  2. Step 2: Convert to fraction form
    614.28/848.06 = 489.54/x
  3. Step 3: Cross multiply
    614.28x = 848.06 × 489.54
  4. Step 4: Simplify right side
    614.28x = 415,156.84
  5. Step 5: Solve for x
    x = 415,156.84/614.28
  6. Step 6: Final answer
    x = 675.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.