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Finding the Fourth Proportional to 572.80, 858.48 and 247.84

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Solution

The fourth proportional to 572.80, 858.48 and 247.84 is: 371.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.80 : 858.48 = 247.84 : x
  2. Step 2: Convert to fraction form
    572.80/858.48 = 247.84/x
  3. Step 3: Cross multiply
    572.80x = 858.48 × 247.84
  4. Step 4: Simplify right side
    572.80x = 212,765.68
  5. Step 5: Solve for x
    x = 212,765.68/572.80
  6. Step 6: Final answer
    x = 371.45

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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.