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Finding the Fourth Proportional to 528.81, 793.71 and 374.30

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Solution

The fourth proportional to 528.81, 793.71 and 374.30 is: 561.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.81 : 793.71 = 374.30 : x
  2. Step 2: Convert to fraction form
    528.81/793.71 = 374.30/x
  3. Step 3: Cross multiply
    528.81x = 793.71 × 374.30
  4. Step 4: Simplify right side
    528.81x = 297,081.68
  5. Step 5: Solve for x
    x = 297,081.68/528.81
  6. Step 6: Final answer
    x = 561.79

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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.