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Finding the Fourth Proportional to 373.80, 560.94 and 142.86

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Solution

The fourth proportional to 373.80, 560.94 and 142.86 is: 214.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.80 : 560.94 = 142.86 : x
  2. Step 2: Convert to fraction form
    373.80/560.94 = 142.86/x
  3. Step 3: Cross multiply
    373.80x = 560.94 × 142.86
  4. Step 4: Simplify right side
    373.80x = 80,135.89
  5. Step 5: Solve for x
    x = 80,135.89/373.80
  6. Step 6: Final answer
    x = 214.38

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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.