Home / 1,535.12-2,302.78-439.46

Finding the Fourth Proportional to 1,535.12, 2,302.78 and 439.46

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Solution

The fourth proportional to 1,535.12, 2,302.78 and 439.46 is: 659.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.12 : 2,302.78 = 439.46 : x
  2. Step 2: Convert to fraction form
    1,535.12/2,302.78 = 439.46/x
  3. Step 3: Cross multiply
    1,535.12x = 2,302.78 × 439.46
  4. Step 4: Simplify right side
    1,535.12x = 1,011,967.09
  5. Step 5: Solve for x
    x = 1,011,967.09/1,535.12
  6. Step 6: Final answer
    x = 659.21

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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.