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Finding the Fourth Proportional to 479.12, 715.37 and 341.15

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Solution

The fourth proportional to 479.12, 715.37 and 341.15 is: 509.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.12 : 715.37 = 341.15 : x
  2. Step 2: Convert to fraction form
    479.12/715.37 = 341.15/x
  3. Step 3: Cross multiply
    479.12x = 715.37 × 341.15
  4. Step 4: Simplify right side
    479.12x = 244,043.19
  5. Step 5: Solve for x
    x = 244,043.19/479.12
  6. Step 6: Final answer
    x = 509.36

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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.