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Finding the Fourth Proportional to 736.17, 1,105.07 and 718.35

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Solution

The fourth proportional to 736.17, 1,105.07 and 718.35 is: 1,078.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.17 : 1,105.07 = 718.35 : x
  2. Step 2: Convert to fraction form
    736.17/1,105.07 = 718.35/x
  3. Step 3: Cross multiply
    736.17x = 1,105.07 × 718.35
  4. Step 4: Simplify right side
    736.17x = 793,823.44
  5. Step 5: Solve for x
    x = 793,823.44/736.17
  6. Step 6: Final answer
    x = 1,078.32

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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.