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Finding the Fourth Proportional to 591.81, 888.93 and 489.47

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Solution

The fourth proportional to 591.81, 888.93 and 489.47 is: 735.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.81 : 888.93 = 489.47 : x
  2. Step 2: Convert to fraction form
    591.81/888.93 = 489.47/x
  3. Step 3: Cross multiply
    591.81x = 888.93 × 489.47
  4. Step 4: Simplify right side
    591.81x = 435,100.12
  5. Step 5: Solve for x
    x = 435,100.12/591.81
  6. Step 6: Final answer
    x = 735.20

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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.