Home / 1,528.21-2,292.32-432.43

Finding the Fourth Proportional to 1,528.21, 2,292.32 and 432.43

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Solution

The fourth proportional to 1,528.21, 2,292.32 and 432.43 is: 648.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.21 : 2,292.32 = 432.43 : x
  2. Step 2: Convert to fraction form
    1,528.21/2,292.32 = 432.43/x
  3. Step 3: Cross multiply
    1,528.21x = 2,292.32 × 432.43
  4. Step 4: Simplify right side
    1,528.21x = 991,260.04
  5. Step 5: Solve for x
    x = 991,260.04/1,528.21
  6. Step 6: Final answer
    x = 648.64

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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.