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Finding the Fourth Proportional to 670.16, 998.50 and 626

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Solution

The fourth proportional to 670.16, 998.50 and 626 is: 932.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.16 : 998.50 = 626 : x
  2. Step 2: Convert to fraction form
    670.16/998.50 = 626/x
  3. Step 3: Cross multiply
    670.16x = 998.50 × 626
  4. Step 4: Simplify right side
    670.16x = 625,061
  5. Step 5: Solve for x
    x = 625,061/670.16
  6. Step 6: Final answer
    x = 932.70

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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.