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Finding the Fourth Proportional to 959.65, 1,436.37 and 496.79

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Solution

The fourth proportional to 959.65, 1,436.37 and 496.79 is: 743.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.65 : 1,436.37 = 496.79 : x
  2. Step 2: Convert to fraction form
    959.65/1,436.37 = 496.79/x
  3. Step 3: Cross multiply
    959.65x = 1,436.37 × 496.79
  4. Step 4: Simplify right side
    959.65x = 713,574.25
  5. Step 5: Solve for x
    x = 713,574.25/959.65
  6. Step 6: Final answer
    x = 743.58

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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.