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Finding the Fourth Proportional to 469.20, 699.96 and 436.04

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Solution

The fourth proportional to 469.20, 699.96 and 436.04 is: 650.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.20 : 699.96 = 436.04 : x
  2. Step 2: Convert to fraction form
    469.20/699.96 = 436.04/x
  3. Step 3: Cross multiply
    469.20x = 699.96 × 436.04
  4. Step 4: Simplify right side
    469.20x = 305,210.56
  5. Step 5: Solve for x
    x = 305,210.56/469.20
  6. Step 6: Final answer
    x = 650.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.