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Finding the Fourth Proportional to 341.68, 509.28 and 330.43

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Solution

The fourth proportional to 341.68, 509.28 and 330.43 is: 492.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.68 : 509.28 = 330.43 : x
  2. Step 2: Convert to fraction form
    341.68/509.28 = 330.43/x
  3. Step 3: Cross multiply
    341.68x = 509.28 × 330.43
  4. Step 4: Simplify right side
    341.68x = 168,281.61
  5. Step 5: Solve for x
    x = 168,281.61/341.68
  6. Step 6: Final answer
    x = 492.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.