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Finding the Fourth Proportional to 934.10, 1,289.21 and 541.36

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Solution

The fourth proportional to 934.10, 1,289.21 and 541.36 is: 747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.10 : 1,289.21 = 541.36 : x
  2. Step 2: Convert to fraction form
    934.10/1,289.21 = 541.36/x
  3. Step 3: Cross multiply
    934.10x = 1,289.21 × 541.36
  4. Step 4: Simplify right side
    934.10x = 697,926.73
  5. Step 5: Solve for x
    x = 697,926.73/934.10
  6. Step 6: Final answer
    x = 747.16

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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.