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Finding the Fourth Proportional to 959.54, 1,323.93 and 539.81

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Solution

The fourth proportional to 959.54, 1,323.93 and 539.81 is: 744.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.54 : 1,323.93 = 539.81 : x
  2. Step 2: Convert to fraction form
    959.54/1,323.93 = 539.81/x
  3. Step 3: Cross multiply
    959.54x = 1,323.93 × 539.81
  4. Step 4: Simplify right side
    959.54x = 714,670.65
  5. Step 5: Solve for x
    x = 714,670.65/959.54
  6. Step 6: Final answer
    x = 744.81

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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.