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Finding the Fourth Proportional to 670.16, 1,010.27 and 625.56

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Solution

The fourth proportional to 670.16, 1,010.27 and 625.56 is: 943.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.16 : 1,010.27 = 625.56 : x
  2. Step 2: Convert to fraction form
    670.16/1,010.27 = 625.56/x
  3. Step 3: Cross multiply
    670.16x = 1,010.27 × 625.56
  4. Step 4: Simplify right side
    670.16x = 631,984.44
  5. Step 5: Solve for x
    x = 631,984.44/670.16
  6. Step 6: Final answer
    x = 943.03

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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.