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Finding the Fourth Proportional to 835.84, 1,152.39 and 573.40

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Solution

The fourth proportional to 835.84, 1,152.39 and 573.40 is: 790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.84 : 1,152.39 = 573.40 : x
  2. Step 2: Convert to fraction form
    835.84/1,152.39 = 573.40/x
  3. Step 3: Cross multiply
    835.84x = 1,152.39 × 573.40
  4. Step 4: Simplify right side
    835.84x = 660,780.43
  5. Step 5: Solve for x
    x = 660,780.43/835.84
  6. Step 6: Final answer
    x = 790.56

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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.