Home / 1,528.08-2,290.75-553.50

Finding the Fourth Proportional to 1,528.08, 2,290.75 and 553.50

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Solution

The fourth proportional to 1,528.08, 2,290.75 and 553.50 is: 829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.08 : 2,290.75 = 553.50 : x
  2. Step 2: Convert to fraction form
    1,528.08/2,290.75 = 553.50/x
  3. Step 3: Cross multiply
    1,528.08x = 2,290.75 × 553.50
  4. Step 4: Simplify right side
    1,528.08x = 1,267,928.74
  5. Step 5: Solve for x
    x = 1,267,928.74/1,528.08
  6. Step 6: Final answer
    x = 829.75

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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.