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Finding the Fourth Proportional to 489.17, 733.59 and 245.53

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Solution

The fourth proportional to 489.17, 733.59 and 245.53 is: 368.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.17 : 733.59 = 245.53 : x
  2. Step 2: Convert to fraction form
    489.17/733.59 = 245.53/x
  3. Step 3: Cross multiply
    489.17x = 733.59 × 245.53
  4. Step 4: Simplify right side
    489.17x = 180,119.27
  5. Step 5: Solve for x
    x = 180,119.27/489.17
  6. Step 6: Final answer
    x = 368.21

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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.