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Finding the Fourth Proportional to 557.47, 834.99 and 340.39

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Solution

The fourth proportional to 557.47, 834.99 and 340.39 is: 509.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.47 : 834.99 = 340.39 : x
  2. Step 2: Convert to fraction form
    557.47/834.99 = 340.39/x
  3. Step 3: Cross multiply
    557.47x = 834.99 × 340.39
  4. Step 4: Simplify right side
    557.47x = 284,222.25
  5. Step 5: Solve for x
    x = 284,222.25/557.47
  6. Step 6: Final answer
    x = 509.84

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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.