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Finding the Fourth Proportional to 355.64, 487.88 and 346.04

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Solution

The fourth proportional to 355.64, 487.88 and 346.04 is: 474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.64 : 487.88 = 346.04 : x
  2. Step 2: Convert to fraction form
    355.64/487.88 = 346.04/x
  3. Step 3: Cross multiply
    355.64x = 487.88 × 346.04
  4. Step 4: Simplify right side
    355.64x = 168,824.95
  5. Step 5: Solve for x
    x = 168,824.95/355.64
  6. Step 6: Final answer
    x = 474.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.