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Finding the Fourth Proportional to 373.60, 557.69 and 349.30

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Solution

The fourth proportional to 373.60, 557.69 and 349.30 is: 521.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.60 : 557.69 = 349.30 : x
  2. Step 2: Convert to fraction form
    373.60/557.69 = 349.30/x
  3. Step 3: Cross multiply
    373.60x = 557.69 × 349.30
  4. Step 4: Simplify right side
    373.60x = 194,801.12
  5. Step 5: Solve for x
    x = 194,801.12/373.60
  6. Step 6: Final answer
    x = 521.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.