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Finding the Fourth Proportional to 489.03, 733.68 and 435.30

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Solution

The fourth proportional to 489.03, 733.68 and 435.30 is: 653.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.03 : 733.68 = 435.30 : x
  2. Step 2: Convert to fraction form
    489.03/733.68 = 435.30/x
  3. Step 3: Cross multiply
    489.03x = 733.68 × 435.30
  4. Step 4: Simplify right side
    489.03x = 319,370.90
  5. Step 5: Solve for x
    x = 319,370.90/489.03
  6. Step 6: Final answer
    x = 653.07

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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.