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Finding the Fourth Proportional to 358.37, 493.96 and 253.32

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Solution

The fourth proportional to 358.37, 493.96 and 253.32 is: 349.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.37 : 493.96 = 253.32 : x
  2. Step 2: Convert to fraction form
    358.37/493.96 = 253.32/x
  3. Step 3: Cross multiply
    358.37x = 493.96 × 253.32
  4. Step 4: Simplify right side
    358.37x = 125,128.26
  5. Step 5: Solve for x
    x = 125,128.26/358.37
  6. Step 6: Final answer
    x = 349.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.