Home / 1,527.15-2,290.53-431.61

Finding the Fourth Proportional to 1,527.15, 2,290.53 and 431.61

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Solution

The fourth proportional to 1,527.15, 2,290.53 and 431.61 is: 647.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.15 : 2,290.53 = 431.61 : x
  2. Step 2: Convert to fraction form
    1,527.15/2,290.53 = 431.61/x
  3. Step 3: Cross multiply
    1,527.15x = 2,290.53 × 431.61
  4. Step 4: Simplify right side
    1,527.15x = 988,619.14
  5. Step 5: Solve for x
    x = 988,619.14/1,527.15
  6. Step 6: Final answer
    x = 647.36

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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.