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Finding the Fourth Proportional to 488.24, 734.98 and 445.17

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Solution

The fourth proportional to 488.24, 734.98 and 445.17 is: 670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.24 : 734.98 = 445.17 : x
  2. Step 2: Convert to fraction form
    488.24/734.98 = 445.17/x
  3. Step 3: Cross multiply
    488.24x = 734.98 × 445.17
  4. Step 4: Simplify right side
    488.24x = 327,191.05
  5. Step 5: Solve for x
    x = 327,191.05/488.24
  6. Step 6: Final answer
    x = 670.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.