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Finding the Fourth Proportional to 573.84, 790 and 515.52

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Solution

The fourth proportional to 573.84, 790 and 515.52 is: 709.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.84 : 790 = 515.52 : x
  2. Step 2: Convert to fraction form
    573.84/790 = 515.52/x
  3. Step 3: Cross multiply
    573.84x = 790 × 515.52
  4. Step 4: Simplify right side
    573.84x = 407,260.80
  5. Step 5: Solve for x
    x = 407,260.80/573.84
  6. Step 6: Final answer
    x = 709.71

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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.