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Finding the Fourth Proportional to 736.90, 1,014.60 and 626.20

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Solution

The fourth proportional to 736.90, 1,014.60 and 626.20 is: 862.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.90 : 1,014.60 = 626.20 : x
  2. Step 2: Convert to fraction form
    736.90/1,014.60 = 626.20/x
  3. Step 3: Cross multiply
    736.90x = 1,014.60 × 626.20
  4. Step 4: Simplify right side
    736.90x = 635,342.52
  5. Step 5: Solve for x
    x = 635,342.52/736.90
  6. Step 6: Final answer
    x = 862.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.