Home / 1,021.89-1,410.18-556.14

Finding the Fourth Proportional to 1,021.89, 1,410.18 and 556.14

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Solution

The fourth proportional to 1,021.89, 1,410.18 and 556.14 is: 767.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.89 : 1,410.18 = 556.14 : x
  2. Step 2: Convert to fraction form
    1,021.89/1,410.18 = 556.14/x
  3. Step 3: Cross multiply
    1,021.89x = 1,410.18 × 556.14
  4. Step 4: Simplify right side
    1,021.89x = 784,257.51
  5. Step 5: Solve for x
    x = 784,257.51/1,021.89
  6. Step 6: Final answer
    x = 767.46

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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.