Home / 1,527.25-2,290.76-487.21

Finding the Fourth Proportional to 1,527.25, 2,290.76 and 487.21

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Solution

The fourth proportional to 1,527.25, 2,290.76 and 487.21 is: 730.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.25 : 2,290.76 = 487.21 : x
  2. Step 2: Convert to fraction form
    1,527.25/2,290.76 = 487.21/x
  3. Step 3: Cross multiply
    1,527.25x = 2,290.76 × 487.21
  4. Step 4: Simplify right side
    1,527.25x = 1,116,081.18
  5. Step 5: Solve for x
    x = 1,116,081.18/1,527.25
  6. Step 6: Final answer
    x = 730.78

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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.