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Finding the Fourth Proportional to 1,640.90, 2,460.90 and 600.72

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Solution

The fourth proportional to 1,640.90, 2,460.90 and 600.72 is: 900.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.90 : 2,460.90 = 600.72 : x
  2. Step 2: Convert to fraction form
    1,640.90/2,460.90 = 600.72/x
  3. Step 3: Cross multiply
    1,640.90x = 2,460.90 × 600.72
  4. Step 4: Simplify right side
    1,640.90x = 1,478,311.85
  5. Step 5: Solve for x
    x = 1,478,311.85/1,640.90
  6. Step 6: Final answer
    x = 900.92

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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.