Home / 1,030.82-1,421.96-632.70

Finding the Fourth Proportional to 1,030.82, 1,421.96 and 632.70

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Solution

The fourth proportional to 1,030.82, 1,421.96 and 632.70 is: 872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.82 : 1,421.96 = 632.70 : x
  2. Step 2: Convert to fraction form
    1,030.82/1,421.96 = 632.70/x
  3. Step 3: Cross multiply
    1,030.82x = 1,421.96 × 632.70
  4. Step 4: Simplify right side
    1,030.82x = 899,674.09
  5. Step 5: Solve for x
    x = 899,674.09/1,030.82
  6. Step 6: Final answer
    x = 872.78

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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.