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Finding the Fourth Proportional to 355.60, 532.32 and 210.88

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Solution

The fourth proportional to 355.60, 532.32 and 210.88 is: 315.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.60 : 532.32 = 210.88 : x
  2. Step 2: Convert to fraction form
    355.60/532.32 = 210.88/x
  3. Step 3: Cross multiply
    355.60x = 532.32 × 210.88
  4. Step 4: Simplify right side
    355.60x = 112,255.64
  5. Step 5: Solve for x
    x = 112,255.64/355.60
  6. Step 6: Final answer
    x = 315.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.