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Finding the Fourth Proportional to 354.32, 487.80 and 336.08

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Solution

The fourth proportional to 354.32, 487.80 and 336.08 is: 462.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.32 : 487.80 = 336.08 : x
  2. Step 2: Convert to fraction form
    354.32/487.80 = 336.08/x
  3. Step 3: Cross multiply
    354.32x = 487.80 × 336.08
  4. Step 4: Simplify right side
    354.32x = 163,939.82
  5. Step 5: Solve for x
    x = 163,939.82/354.32
  6. Step 6: Final answer
    x = 462.69

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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.