Home / 1,030.46-1,422.23-637.66

Finding the Fourth Proportional to 1,030.46, 1,422.23 and 637.66

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Solution

The fourth proportional to 1,030.46, 1,422.23 and 637.66 is: 880.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.46 : 1,422.23 = 637.66 : x
  2. Step 2: Convert to fraction form
    1,030.46/1,422.23 = 637.66/x
  3. Step 3: Cross multiply
    1,030.46x = 1,422.23 × 637.66
  4. Step 4: Simplify right side
    1,030.46x = 906,899.18
  5. Step 5: Solve for x
    x = 906,899.18/1,030.46
  6. Step 6: Final answer
    x = 880.09

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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.