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Finding the Fourth Proportional to 528.26, 789.61 and 373.16

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Solution

The fourth proportional to 528.26, 789.61 and 373.16 is: 557.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.26 : 789.61 = 373.16 : x
  2. Step 2: Convert to fraction form
    528.26/789.61 = 373.16/x
  3. Step 3: Cross multiply
    528.26x = 789.61 × 373.16
  4. Step 4: Simplify right side
    528.26x = 294,650.87
  5. Step 5: Solve for x
    x = 294,650.87/528.26
  6. Step 6: Final answer
    x = 557.78

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Why These Related Problems?

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