Home / 1,030.27-1,421.44-631.52

Finding the Fourth Proportional to 1,030.27, 1,421.44 and 631.52

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Solution

The fourth proportional to 1,030.27, 1,421.44 and 631.52 is: 871.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.27 : 1,421.44 = 631.52 : x
  2. Step 2: Convert to fraction form
    1,030.27/1,421.44 = 631.52/x
  3. Step 3: Cross multiply
    1,030.27x = 1,421.44 × 631.52
  4. Step 4: Simplify right side
    1,030.27x = 897,660.68
  5. Step 5: Solve for x
    x = 897,660.68/1,030.27
  6. Step 6: Final answer
    x = 871.29

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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.