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Finding the Fourth Proportional to 741.90, 1,110.90 and 626.06

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Solution

The fourth proportional to 741.90, 1,110.90 and 626.06 is: 937.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.90 : 1,110.90 = 626.06 : x
  2. Step 2: Convert to fraction form
    741.90/1,110.90 = 626.06/x
  3. Step 3: Cross multiply
    741.90x = 1,110.90 × 626.06
  4. Step 4: Simplify right side
    741.90x = 695,490.05
  5. Step 5: Solve for x
    x = 695,490.05/741.90
  6. Step 6: Final answer
    x = 937.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.