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Finding the Fourth Proportional to 314.87, 473.21 and 292.25

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Solution

The fourth proportional to 314.87, 473.21 and 292.25 is: 439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.87 : 473.21 = 292.25 : x
  2. Step 2: Convert to fraction form
    314.87/473.21 = 292.25/x
  3. Step 3: Cross multiply
    314.87x = 473.21 × 292.25
  4. Step 4: Simplify right side
    314.87x = 138,291.80
  5. Step 5: Solve for x
    x = 138,291.80/314.87
  6. Step 6: Final answer
    x = 439.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.