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Finding the Fourth Proportional to 652.18, 973.62 and 629.40

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Solution

The fourth proportional to 652.18, 973.62 and 629.40 is: 939.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.18 : 973.62 = 629.40 : x
  2. Step 2: Convert to fraction form
    652.18/973.62 = 629.40/x
  3. Step 3: Cross multiply
    652.18x = 973.62 × 629.40
  4. Step 4: Simplify right side
    652.18x = 612,796.43
  5. Step 5: Solve for x
    x = 612,796.43/652.18
  6. Step 6: Final answer
    x = 939.61

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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.