Home / 1,528.38-2,291.20-554.26

Finding the Fourth Proportional to 1,528.38, 2,291.20 and 554.26

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Solution

The fourth proportional to 1,528.38, 2,291.20 and 554.26 is: 830.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.38 : 2,291.20 = 554.26 : x
  2. Step 2: Convert to fraction form
    1,528.38/2,291.20 = 554.26/x
  3. Step 3: Cross multiply
    1,528.38x = 2,291.20 × 554.26
  4. Step 4: Simplify right side
    1,528.38x = 1,269,920.51
  5. Step 5: Solve for x
    x = 1,269,920.51/1,528.38
  6. Step 6: Final answer
    x = 830.89

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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.