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Finding the Fourth Proportional to 489.02, 733.73 and 245.57

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Solution

The fourth proportional to 489.02, 733.73 and 245.57 is: 368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.02 : 733.73 = 245.57 : x
  2. Step 2: Convert to fraction form
    489.02/733.73 = 245.57/x
  3. Step 3: Cross multiply
    489.02x = 733.73 × 245.57
  4. Step 4: Simplify right side
    489.02x = 180,177.18
  5. Step 5: Solve for x
    x = 180,177.18/489.02
  6. Step 6: Final answer
    x = 368.45

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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.