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Finding the Fourth Proportional to 560.48, 839.82 and 343.40

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Solution

The fourth proportional to 560.48, 839.82 and 343.40 is: 514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.48 : 839.82 = 343.40 : x
  2. Step 2: Convert to fraction form
    560.48/839.82 = 343.40/x
  3. Step 3: Cross multiply
    560.48x = 839.82 × 343.40
  4. Step 4: Simplify right side
    560.48x = 288,394.19
  5. Step 5: Solve for x
    x = 288,394.19/560.48
  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.