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Finding the Fourth Proportional to 340.08, 509.56 and 339

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Solution

The fourth proportional to 340.08, 509.56 and 339 is: 507.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.08 : 509.56 = 339 : x
  2. Step 2: Convert to fraction form
    340.08/509.56 = 339/x
  3. Step 3: Cross multiply
    340.08x = 509.56 × 339
  4. Step 4: Simplify right side
    340.08x = 172,740.84
  5. Step 5: Solve for x
    x = 172,740.84/340.08
  6. Step 6: Final answer
    x = 507.94

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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.