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Finding the Fourth Proportional to 560.12, 839.70 and 299.84

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Solution

The fourth proportional to 560.12, 839.70 and 299.84 is: 449.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.12 : 839.70 = 299.84 : x
  2. Step 2: Convert to fraction form
    560.12/839.70 = 299.84/x
  3. Step 3: Cross multiply
    560.12x = 839.70 × 299.84
  4. Step 4: Simplify right side
    560.12x = 251,771.45
  5. Step 5: Solve for x
    x = 251,771.45/560.12
  6. Step 6: Final answer
    x = 449.50

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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.