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Finding the Fourth Proportional to 529.62, 793.74 and 313.38

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Solution

The fourth proportional to 529.62, 793.74 and 313.38 is: 469.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.62 : 793.74 = 313.38 : x
  2. Step 2: Convert to fraction form
    529.62/793.74 = 313.38/x
  3. Step 3: Cross multiply
    529.62x = 793.74 × 313.38
  4. Step 4: Simplify right side
    529.62x = 248,742.24
  5. Step 5: Solve for x
    x = 248,742.24/529.62
  6. Step 6: Final answer
    x = 469.66

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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.