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Finding the Fourth Proportional to 528.01, 792.01 and 319.82

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Solution

The fourth proportional to 528.01, 792.01 and 319.82 is: 479.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.01 : 792.01 = 319.82 : x
  2. Step 2: Convert to fraction form
    528.01/792.01 = 319.82/x
  3. Step 3: Cross multiply
    528.01x = 792.01 × 319.82
  4. Step 4: Simplify right side
    528.01x = 253,303.76
  5. Step 5: Solve for x
    x = 253,303.76/528.01
  6. Step 6: Final answer
    x = 479.74

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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.