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Finding the Fourth Proportional to 560.30, 839.50 and 343.42

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Solution

The fourth proportional to 560.30, 839.50 and 343.42 is: 514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.30 : 839.50 = 343.42 : x
  2. Step 2: Convert to fraction form
    560.30/839.50 = 343.42/x
  3. Step 3: Cross multiply
    560.30x = 839.50 × 343.42
  4. Step 4: Simplify right side
    560.30x = 288,298.13
  5. Step 5: Solve for x
    x = 288,298.13/560.30
  6. Step 6: Final answer
    x = 514.55

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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.