Home / 1,388.14-2,080.64-566.20

Finding the Fourth Proportional to 1,388.14, 2,080.64 and 566.20

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Solution

The fourth proportional to 1,388.14, 2,080.64 and 566.20 is: 848.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.14 : 2,080.64 = 566.20 : x
  2. Step 2: Convert to fraction form
    1,388.14/2,080.64 = 566.20/x
  3. Step 3: Cross multiply
    1,388.14x = 2,080.64 × 566.20
  4. Step 4: Simplify right side
    1,388.14x = 1,178,058.37
  5. Step 5: Solve for x
    x = 1,178,058.37/1,388.14
  6. Step 6: Final answer
    x = 848.66

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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.