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Finding the Fourth Proportional to 675.44, 1,007.44 and 637.57

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Solution

The fourth proportional to 675.44, 1,007.44 and 637.57 is: 950.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.44 : 1,007.44 = 637.57 : x
  2. Step 2: Convert to fraction form
    675.44/1,007.44 = 637.57/x
  3. Step 3: Cross multiply
    675.44x = 1,007.44 × 637.57
  4. Step 4: Simplify right side
    675.44x = 642,313.19
  5. Step 5: Solve for x
    x = 642,313.19/675.44
  6. Step 6: Final answer
    x = 950.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.