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Finding the Fourth Proportional to 887.49, 1,331.63 and 541.10

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Solution

The fourth proportional to 887.49, 1,331.63 and 541.10 is: 811.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.49 : 1,331.63 = 541.10 : x
  2. Step 2: Convert to fraction form
    887.49/1,331.63 = 541.10/x
  3. Step 3: Cross multiply
    887.49x = 1,331.63 × 541.10
  4. Step 4: Simplify right side
    887.49x = 720,535.63
  5. Step 5: Solve for x
    x = 720,535.63/887.49
  6. Step 6: Final answer
    x = 811.88

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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.