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Finding the Fourth Proportional to 589.80, 882.90 and 345.60

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Solution

The fourth proportional to 589.80, 882.90 and 345.60 is: 517.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.80 : 882.90 = 345.60 : x
  2. Step 2: Convert to fraction form
    589.80/882.90 = 345.60/x
  3. Step 3: Cross multiply
    589.80x = 882.90 × 345.60
  4. Step 4: Simplify right side
    589.80x = 305,130.24
  5. Step 5: Solve for x
    x = 305,130.24/589.80
  6. Step 6: Final answer
    x = 517.35

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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.