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Finding the Fourth Proportional to 528.39, 788.60 and 482.13

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Solution

The fourth proportional to 528.39, 788.60 and 482.13 is: 719.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.39 : 788.60 = 482.13 : x
  2. Step 2: Convert to fraction form
    528.39/788.60 = 482.13/x
  3. Step 3: Cross multiply
    528.39x = 788.60 × 482.13
  4. Step 4: Simplify right side
    528.39x = 380,208.92
  5. Step 5: Solve for x
    x = 380,208.92/528.39
  6. Step 6: Final answer
    x = 719.56

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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.