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Finding the Fourth Proportional to 210.60, 316.25 and 176.64

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Solution

The fourth proportional to 210.60, 316.25 and 176.64 is: 265.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.60 : 316.25 = 176.64 : x
  2. Step 2: Convert to fraction form
    210.60/316.25 = 176.64/x
  3. Step 3: Cross multiply
    210.60x = 316.25 × 176.64
  4. Step 4: Simplify right side
    210.60x = 55,861.52
  5. Step 5: Solve for x
    x = 55,861.52/210.60
  6. Step 6: Final answer
    x = 265.25

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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.