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Finding the Fourth Proportional to 529.60, 794.38 and 286.60

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Solution

The fourth proportional to 529.60, 794.38 and 286.60 is: 429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.60 : 794.38 = 286.60 : x
  2. Step 2: Convert to fraction form
    529.60/794.38 = 286.60/x
  3. Step 3: Cross multiply
    529.60x = 794.38 × 286.60
  4. Step 4: Simplify right side
    529.60x = 227,669.31
  5. Step 5: Solve for x
    x = 227,669.31/529.60
  6. Step 6: Final answer
    x = 429.89

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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.