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Finding the Fourth Proportional to 373.47, 560.40 and 157.20

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Solution

The fourth proportional to 373.47, 560.40 and 157.20 is: 235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.47 : 560.40 = 157.20 : x
  2. Step 2: Convert to fraction form
    373.47/560.40 = 157.20/x
  3. Step 3: Cross multiply
    373.47x = 560.40 × 157.20
  4. Step 4: Simplify right side
    373.47x = 88,094.88
  5. Step 5: Solve for x
    x = 88,094.88/373.47
  6. Step 6: Final answer
    x = 235.88

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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.