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Finding the Fourth Proportional to 373.69, 560.40 and 130.20

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Solution

The fourth proportional to 373.69, 560.40 and 130.20 is: 195.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.69 : 560.40 = 130.20 : x
  2. Step 2: Convert to fraction form
    373.69/560.40 = 130.20/x
  3. Step 3: Cross multiply
    373.69x = 560.40 × 130.20
  4. Step 4: Simplify right side
    373.69x = 72,964.08
  5. Step 5: Solve for x
    x = 72,964.08/373.69
  6. Step 6: Final answer
    x = 195.25

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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.