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Finding the Fourth Proportional to 572.35, 858.39 and 247.54

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Solution

The fourth proportional to 572.35, 858.39 and 247.54 is: 371.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.35 : 858.39 = 247.54 : x
  2. Step 2: Convert to fraction form
    572.35/858.39 = 247.54/x
  3. Step 3: Cross multiply
    572.35x = 858.39 × 247.54
  4. Step 4: Simplify right side
    572.35x = 212,485.86
  5. Step 5: Solve for x
    x = 212,485.86/572.35
  6. Step 6: Final answer
    x = 371.25

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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.