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Finding the Fourth Proportional to 959.35, 1,323.94 and 539.69

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Solution

The fourth proportional to 959.35, 1,323.94 and 539.69 is: 744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.35 : 1,323.94 = 539.69 : x
  2. Step 2: Convert to fraction form
    959.35/1,323.94 = 539.69/x
  3. Step 3: Cross multiply
    959.35x = 1,323.94 × 539.69
  4. Step 4: Simplify right side
    959.35x = 714,517.18
  5. Step 5: Solve for x
    x = 714,517.18/959.35
  6. Step 6: Final answer
    x = 744.80

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1.5x scale

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.