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Finding the Fourth Proportional to 886.99, 1,330.40 and 448.07

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Solution

The fourth proportional to 886.99, 1,330.40 and 448.07 is: 672.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.99 : 1,330.40 = 448.07 : x
  2. Step 2: Convert to fraction form
    886.99/1,330.40 = 448.07/x
  3. Step 3: Cross multiply
    886.99x = 1,330.40 × 448.07
  4. Step 4: Simplify right side
    886.99x = 596,112.33
  5. Step 5: Solve for x
    x = 596,112.33/886.99
  6. Step 6: Final answer
    x = 672.06

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Double scale
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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.