Home / 1,485.42-2,228.40-512.16

Finding the Fourth Proportional to 1,485.42, 2,228.40 and 512.16

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Solution

The fourth proportional to 1,485.42, 2,228.40 and 512.16 is: 768.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.42 : 2,228.40 = 512.16 : x
  2. Step 2: Convert to fraction form
    1,485.42/2,228.40 = 512.16/x
  3. Step 3: Cross multiply
    1,485.42x = 2,228.40 × 512.16
  4. Step 4: Simplify right side
    1,485.42x = 1,141,297.34
  5. Step 5: Solve for x
    x = 1,141,297.34/1,485.42
  6. Step 6: Final answer
    x = 768.33

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1.5x scale

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.