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Finding the Fourth Proportional to 886.71, 1,223.65 and 488.37

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Solution

The fourth proportional to 886.71, 1,223.65 and 488.37 is: 673.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.71 : 1,223.65 = 488.37 : x
  2. Step 2: Convert to fraction form
    886.71/1,223.65 = 488.37/x
  3. Step 3: Cross multiply
    886.71x = 1,223.65 × 488.37
  4. Step 4: Simplify right side
    886.71x = 597,588.14
  5. Step 5: Solve for x
    x = 597,588.14/886.71
  6. Step 6: Final answer
    x = 673.94

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1.5x scale

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.