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Finding the Fourth Proportional to 626.07, 857.70 and 602.70

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Solution

The fourth proportional to 626.07, 857.70 and 602.70 is: 825.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.07 : 857.70 = 602.70 : x
  2. Step 2: Convert to fraction form
    626.07/857.70 = 602.70/x
  3. Step 3: Cross multiply
    626.07x = 857.70 × 602.70
  4. Step 4: Simplify right side
    626.07x = 516,935.79
  5. Step 5: Solve for x
    x = 516,935.79/626.07
  6. Step 6: Final answer
    x = 825.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.