Home / 1,015.04-1,523.12-438.40

Finding the Fourth Proportional to 1,015.04, 1,523.12 and 438.40

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Solution

The fourth proportional to 1,015.04, 1,523.12 and 438.40 is: 657.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.04 : 1,523.12 = 438.40 : x
  2. Step 2: Convert to fraction form
    1,015.04/1,523.12 = 438.40/x
  3. Step 3: Cross multiply
    1,015.04x = 1,523.12 × 438.40
  4. Step 4: Simplify right side
    1,015.04x = 667,735.81
  5. Step 5: Solve for x
    x = 667,735.81/1,015.04
  6. Step 6: Final answer
    x = 657.84

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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.