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Finding the Fourth Proportional to 373.91, 560.86 and 157.64

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Solution

The fourth proportional to 373.91, 560.86 and 157.64 is: 236.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.91 : 560.86 = 157.64 : x
  2. Step 2: Convert to fraction form
    373.91/560.86 = 157.64/x
  3. Step 3: Cross multiply
    373.91x = 560.86 × 157.64
  4. Step 4: Simplify right side
    373.91x = 88,411.17
  5. Step 5: Solve for x
    x = 88,411.17/373.91
  6. Step 6: Final answer
    x = 236.45

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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.