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Finding the Fourth Proportional to 359.11, 498.21 and 346.15

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Solution

The fourth proportional to 359.11, 498.21 and 346.15 is: 480.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.11 : 498.21 = 346.15 : x
  2. Step 2: Convert to fraction form
    359.11/498.21 = 346.15/x
  3. Step 3: Cross multiply
    359.11x = 498.21 × 346.15
  4. Step 4: Simplify right side
    359.11x = 172,455.39
  5. Step 5: Solve for x
    x = 172,455.39/359.11
  6. Step 6: Final answer
    x = 480.23

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.