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Finding the Fourth Proportional to 441.52, 661.28 and 433.05

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Solution

The fourth proportional to 441.52, 661.28 and 433.05 is: 648.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.52 : 661.28 = 433.05 : x
  2. Step 2: Convert to fraction form
    441.52/661.28 = 433.05/x
  3. Step 3: Cross multiply
    441.52x = 661.28 × 433.05
  4. Step 4: Simplify right side
    441.52x = 286,364.00
  5. Step 5: Solve for x
    x = 286,364.00/441.52
  6. Step 6: Final answer
    x = 648.59

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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.