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Finding the Fourth Proportional to 528.93, 790.56 and 482.42

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Solution

The fourth proportional to 528.93, 790.56 and 482.42 is: 721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.93 : 790.56 = 482.42 : x
  2. Step 2: Convert to fraction form
    528.93/790.56 = 482.42/x
  3. Step 3: Cross multiply
    528.93x = 790.56 × 482.42
  4. Step 4: Simplify right side
    528.93x = 381,383.93
  5. Step 5: Solve for x
    x = 381,383.93/528.93
  6. Step 6: Final answer
    x = 721.05

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.