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Finding the Fourth Proportional to 435.20, 651.60 and 307.04

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Solution

The fourth proportional to 435.20, 651.60 and 307.04 is: 459.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.20 : 651.60 = 307.04 : x
  2. Step 2: Convert to fraction form
    435.20/651.60 = 307.04/x
  3. Step 3: Cross multiply
    435.20x = 651.60 × 307.04
  4. Step 4: Simplify right side
    435.20x = 200,067.26
  5. Step 5: Solve for x
    x = 200,067.26/435.20
  6. Step 6: Final answer
    x = 459.71

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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.