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Finding the Fourth Proportional to 577.50, 865.78 and 252.64

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Solution

The fourth proportional to 577.50, 865.78 and 252.64 is: 378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.50 : 865.78 = 252.64 : x
  2. Step 2: Convert to fraction form
    577.50/865.78 = 252.64/x
  3. Step 3: Cross multiply
    577.50x = 865.78 × 252.64
  4. Step 4: Simplify right side
    577.50x = 218,731.11
  5. Step 5: Solve for x
    x = 218,731.11/577.50
  6. Step 6: Final answer
    x = 378.76

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Double scale
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1.5x scale

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.