Home / 1,527.26-2,290.65-431.48

Finding the Fourth Proportional to 1,527.26, 2,290.65 and 431.48

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Solution

The fourth proportional to 1,527.26, 2,290.65 and 431.48 is: 647.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.26 : 2,290.65 = 431.48 : x
  2. Step 2: Convert to fraction form
    1,527.26/2,290.65 = 431.48/x
  3. Step 3: Cross multiply
    1,527.26x = 2,290.65 × 431.48
  4. Step 4: Simplify right side
    1,527.26x = 988,364.53
  5. Step 5: Solve for x
    x = 988,364.53/1,527.26
  6. Step 6: Final answer
    x = 647.15

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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.