Home / 1,012.18-1,396.80-570.16

Finding the Fourth Proportional to 1,012.18, 1,396.80 and 570.16

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Solution

The fourth proportional to 1,012.18, 1,396.80 and 570.16 is: 786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012.18 : 1,396.80 = 570.16 : x
  2. Step 2: Convert to fraction form
    1,012.18/1,396.80 = 570.16/x
  3. Step 3: Cross multiply
    1,012.18x = 1,396.80 × 570.16
  4. Step 4: Simplify right side
    1,012.18x = 796,399.49
  5. Step 5: Solve for x
    x = 796,399.49/1,012.18
  6. Step 6: Final answer
    x = 786.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.