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Finding the Fourth Proportional to 887.24, 1,328 and 475.36

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Solution

The fourth proportional to 887.24, 1,328 and 475.36 is: 711.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.24 : 1,328 = 475.36 : x
  2. Step 2: Convert to fraction form
    887.24/1,328 = 475.36/x
  3. Step 3: Cross multiply
    887.24x = 1,328 × 475.36
  4. Step 4: Simplify right side
    887.24x = 631,278.08
  5. Step 5: Solve for x
    x = 631,278.08/887.24
  6. Step 6: Final answer
    x = 711.51

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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.