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Finding the Fourth Proportional to 3,000.23, 4,500.35 and 808.90

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Solution

The fourth proportional to 3,000.23, 4,500.35 and 808.90 is: 1,213.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000.23 : 4,500.35 = 808.90 : x
  2. Step 2: Convert to fraction form
    3,000.23/4,500.35 = 808.90/x
  3. Step 3: Cross multiply
    3,000.23x = 4,500.35 × 808.90
  4. Step 4: Simplify right side
    3,000.23x = 3,640,333.12
  5. Step 5: Solve for x
    x = 3,640,333.12/3,000.23
  6. Step 6: Final answer
    x = 1,213.35

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1.5x scale

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.