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Finding the Fourth Proportional to 672.14, 1,013.33 and 625.16

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Solution

The fourth proportional to 672.14, 1,013.33 and 625.16 is: 942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.14 : 1,013.33 = 625.16 : x
  2. Step 2: Convert to fraction form
    672.14/1,013.33 = 625.16/x
  3. Step 3: Cross multiply
    672.14x = 1,013.33 × 625.16
  4. Step 4: Simplify right side
    672.14x = 633,485.19
  5. Step 5: Solve for x
    x = 633,485.19/672.14
  6. Step 6: Final answer
    x = 942.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.