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Finding the Fourth Proportional to 735.66, 1,103.63 and 324.72

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Solution

The fourth proportional to 735.66, 1,103.63 and 324.72 is: 487.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.66 : 1,103.63 = 324.72 : x
  2. Step 2: Convert to fraction form
    735.66/1,103.63 = 324.72/x
  3. Step 3: Cross multiply
    735.66x = 1,103.63 × 324.72
  4. Step 4: Simplify right side
    735.66x = 358,369.11
  5. Step 5: Solve for x
    x = 358,369.11/735.66
  6. Step 6: Final answer
    x = 487.14

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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.