Home / 1,528.08-2,292.08-432.40

Finding the Fourth Proportional to 1,528.08, 2,292.08 and 432.40

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Solution

The fourth proportional to 1,528.08, 2,292.08 and 432.40 is: 648.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.08 : 2,292.08 = 432.40 : x
  2. Step 2: Convert to fraction form
    1,528.08/2,292.08 = 432.40/x
  3. Step 3: Cross multiply
    1,528.08x = 2,292.08 × 432.40
  4. Step 4: Simplify right side
    1,528.08x = 991,095.39
  5. Step 5: Solve for x
    x = 991,095.39/1,528.08
  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.