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Finding the Fourth Proportional to 741.07, 1,111.74 and 738.91

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Solution

The fourth proportional to 741.07, 1,111.74 and 738.91 is: 1,108.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.07 : 1,111.74 = 738.91 : x
  2. Step 2: Convert to fraction form
    741.07/1,111.74 = 738.91/x
  3. Step 3: Cross multiply
    741.07x = 1,111.74 × 738.91
  4. Step 4: Simplify right side
    741.07x = 821,475.80
  5. Step 5: Solve for x
    x = 821,475.80/741.07
  6. Step 6: Final answer
    x = 1,108.50

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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.