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Finding the Fourth Proportional to 560.05, 839.45 and 299.79

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Solution

The fourth proportional to 560.05, 839.45 and 299.79 is: 449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.05 : 839.45 = 299.79 : x
  2. Step 2: Convert to fraction form
    560.05/839.45 = 299.79/x
  3. Step 3: Cross multiply
    560.05x = 839.45 × 299.79
  4. Step 4: Simplify right side
    560.05x = 251,654.52
  5. Step 5: Solve for x
    x = 251,654.52/560.05
  6. Step 6: Final answer
    x = 449.35

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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.