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Finding the Fourth Proportional to 316.95, 473.09 and 293.79

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Solution

The fourth proportional to 316.95, 473.09 and 293.79 is: 438.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.95 : 473.09 = 293.79 : x
  2. Step 2: Convert to fraction form
    316.95/473.09 = 293.79/x
  3. Step 3: Cross multiply
    316.95x = 473.09 × 293.79
  4. Step 4: Simplify right side
    316.95x = 138,989.11
  5. Step 5: Solve for x
    x = 138,989.11/316.95
  6. Step 6: Final answer
    x = 438.52

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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.