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Finding the Fourth Proportional to 887.06, 1,224.11 and 488.72

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Solution

The fourth proportional to 887.06, 1,224.11 and 488.72 is: 674.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.06 : 1,224.11 = 488.72 : x
  2. Step 2: Convert to fraction form
    887.06/1,224.11 = 488.72/x
  3. Step 3: Cross multiply
    887.06x = 1,224.11 × 488.72
  4. Step 4: Simplify right side
    887.06x = 598,238.48
  5. Step 5: Solve for x
    x = 598,238.48/887.06
  6. Step 6: Final answer
    x = 674.41

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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.