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Finding the Fourth Proportional to 373.86, 560.91 and 157.38

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Solution

The fourth proportional to 373.86, 560.91 and 157.38 is: 236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.86 : 560.91 = 157.38 : x
  2. Step 2: Convert to fraction form
    373.86/560.91 = 157.38/x
  3. Step 3: Cross multiply
    373.86x = 560.91 × 157.38
  4. Step 4: Simplify right side
    373.86x = 88,276.02
  5. Step 5: Solve for x
    x = 88,276.02/373.86
  6. Step 6: Final answer
    x = 236.12

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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.