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Finding the Fourth Proportional to 589.60, 882.60 and 557.20

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Solution

The fourth proportional to 589.60, 882.60 and 557.20 is: 834.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.60 : 882.60 = 557.20 : x
  2. Step 2: Convert to fraction form
    589.60/882.60 = 557.20/x
  3. Step 3: Cross multiply
    589.60x = 882.60 × 557.20
  4. Step 4: Simplify right side
    589.60x = 491,784.72
  5. Step 5: Solve for x
    x = 491,784.72/589.60
  6. Step 6: Final answer
    x = 834.10

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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.