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Finding the Fourth Proportional to 528.30, 792.67 and 284.77

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Solution

The fourth proportional to 528.30, 792.67 and 284.77 is: 427.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.30 : 792.67 = 284.77 : x
  2. Step 2: Convert to fraction form
    528.30/792.67 = 284.77/x
  3. Step 3: Cross multiply
    528.30x = 792.67 × 284.77
  4. Step 4: Simplify right side
    528.30x = 225,726.19
  5. Step 5: Solve for x
    x = 225,726.19/528.30
  6. Step 6: Final answer
    x = 427.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.