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Finding the Fourth Proportional to 732.36, 1,009.44 and 499.08

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Solution

The fourth proportional to 732.36, 1,009.44 and 499.08 is: 687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.36 : 1,009.44 = 499.08 : x
  2. Step 2: Convert to fraction form
    732.36/1,009.44 = 499.08/x
  3. Step 3: Cross multiply
    732.36x = 1,009.44 × 499.08
  4. Step 4: Simplify right side
    732.36x = 503,791.32
  5. Step 5: Solve for x
    x = 503,791.32/732.36
  6. Step 6: Final answer
    x = 687.90

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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.