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Finding the Fourth Proportional to 676.04, 1,012.88 and 637.04

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Solution

The fourth proportional to 676.04, 1,012.88 and 637.04 is: 954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.04 : 1,012.88 = 637.04 : x
  2. Step 2: Convert to fraction form
    676.04/1,012.88 = 637.04/x
  3. Step 3: Cross multiply
    676.04x = 1,012.88 × 637.04
  4. Step 4: Simplify right side
    676.04x = 645,245.08
  5. Step 5: Solve for x
    x = 645,245.08/676.04
  6. Step 6: Final answer
    x = 954.45

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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.