Home / 1,070.41-1,477.27-628.30

Finding the Fourth Proportional to 1,070.41, 1,477.27 and 628.30

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Solution

The fourth proportional to 1,070.41, 1,477.27 and 628.30 is: 867.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.41 : 1,477.27 = 628.30 : x
  2. Step 2: Convert to fraction form
    1,070.41/1,477.27 = 628.30/x
  3. Step 3: Cross multiply
    1,070.41x = 1,477.27 × 628.30
  4. Step 4: Simplify right side
    1,070.41x = 928,171.37
  5. Step 5: Solve for x
    x = 928,171.37/1,070.41
  6. Step 6: Final answer
    x = 867.12

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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.