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Finding the Fourth Proportional to 316.95, 439.37 and 297.51

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Solution

The fourth proportional to 316.95, 439.37 and 297.51 is: 412.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.95 : 439.37 = 297.51 : x
  2. Step 2: Convert to fraction form
    316.95/439.37 = 297.51/x
  3. Step 3: Cross multiply
    316.95x = 439.37 × 297.51
  4. Step 4: Simplify right side
    316.95x = 130,715.48
  5. Step 5: Solve for x
    x = 130,715.48/316.95
  6. Step 6: Final answer
    x = 412.42

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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.