Home / 1,315.08-1,971.36-448.92

Finding the Fourth Proportional to 1,315.08, 1,971.36 and 448.92

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Solution

The fourth proportional to 1,315.08, 1,971.36 and 448.92 is: 672.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.08 : 1,971.36 = 448.92 : x
  2. Step 2: Convert to fraction form
    1,315.08/1,971.36 = 448.92/x
  3. Step 3: Cross multiply
    1,315.08x = 1,971.36 × 448.92
  4. Step 4: Simplify right side
    1,315.08x = 884,982.93
  5. Step 5: Solve for x
    x = 884,982.93/1,315.08
  6. Step 6: Final answer
    x = 672.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.