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Finding the Fourth Proportional to 373.76, 560.43 and 142.58

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Solution

The fourth proportional to 373.76, 560.43 and 142.58 is: 213.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.76 : 560.43 = 142.58 : x
  2. Step 2: Convert to fraction form
    373.76/560.43 = 142.58/x
  3. Step 3: Cross multiply
    373.76x = 560.43 × 142.58
  4. Step 4: Simplify right side
    373.76x = 79,905.40
  5. Step 5: Solve for x
    x = 79,905.40/373.76
  6. Step 6: Final answer
    x = 213.79

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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.