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Finding the Fourth Proportional to 528.59, 789.16 and 437.47

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Solution

The fourth proportional to 528.59, 789.16 and 437.47 is: 653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.59 : 789.16 = 437.47 : x
  2. Step 2: Convert to fraction form
    528.59/789.16 = 437.47/x
  3. Step 3: Cross multiply
    528.59x = 789.16 × 437.47
  4. Step 4: Simplify right side
    528.59x = 345,233.83
  5. Step 5: Solve for x
    x = 345,233.83/528.59
  6. Step 6: Final answer
    x = 653.12

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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.