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Finding the Fourth Proportional to 894.64, 1,234.76 and 521.68

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Solution

The fourth proportional to 894.64, 1,234.76 and 521.68 is: 720.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.64 : 1,234.76 = 521.68 : x
  2. Step 2: Convert to fraction form
    894.64/1,234.76 = 521.68/x
  3. Step 3: Cross multiply
    894.64x = 1,234.76 × 521.68
  4. Step 4: Simplify right side
    894.64x = 644,149.60
  5. Step 5: Solve for x
    x = 644,149.60/894.64
  6. Step 6: Final answer
    x = 720.01

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Double scale
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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.