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Finding the Fourth Proportional to 373.28, 557.52 and 339.24

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Solution

The fourth proportional to 373.28, 557.52 and 339.24 is: 506.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.28 : 557.52 = 339.24 : x
  2. Step 2: Convert to fraction form
    373.28/557.52 = 339.24/x
  3. Step 3: Cross multiply
    373.28x = 557.52 × 339.24
  4. Step 4: Simplify right side
    373.28x = 189,133.08
  5. Step 5: Solve for x
    x = 189,133.08/373.28
  6. Step 6: Final answer
    x = 506.68

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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.