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Finding the Fourth Proportional to 529.92, 794.16 and 312.96

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Solution

The fourth proportional to 529.92, 794.16 and 312.96 is: 469.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.92 : 794.16 = 312.96 : x
  2. Step 2: Convert to fraction form
    529.92/794.16 = 312.96/x
  3. Step 3: Cross multiply
    529.92x = 794.16 × 312.96
  4. Step 4: Simplify right side
    529.92x = 248,540.31
  5. Step 5: Solve for x
    x = 248,540.31/529.92
  6. Step 6: Final answer
    x = 469.01

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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.