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Finding the Fourth Proportional to 372.86, 558.68 and 210.45

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Solution

The fourth proportional to 372.86, 558.68 and 210.45 is: 315.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.86 : 558.68 = 210.45 : x
  2. Step 2: Convert to fraction form
    372.86/558.68 = 210.45/x
  3. Step 3: Cross multiply
    372.86x = 558.68 × 210.45
  4. Step 4: Simplify right side
    372.86x = 117,573.15
  5. Step 5: Solve for x
    x = 117,573.15/372.86
  6. Step 6: Final answer
    x = 315.33

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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.