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Finding the Fourth Proportional to 675.11, 1,011.93 and 482.15

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Solution

The fourth proportional to 675.11, 1,011.93 and 482.15 is: 722.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.11 : 1,011.93 = 482.15 : x
  2. Step 2: Convert to fraction form
    675.11/1,011.93 = 482.15/x
  3. Step 3: Cross multiply
    675.11x = 1,011.93 × 482.15
  4. Step 4: Simplify right side
    675.11x = 487,902.05
  5. Step 5: Solve for x
    x = 487,902.05/675.11
  6. Step 6: Final answer
    x = 722.70

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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.