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Finding the Fourth Proportional to 478.23, 716.43 and 295.17

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Solution

The fourth proportional to 478.23, 716.43 and 295.17 is: 442.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.23 : 716.43 = 295.17 : x
  2. Step 2: Convert to fraction form
    478.23/716.43 = 295.17/x
  3. Step 3: Cross multiply
    478.23x = 716.43 × 295.17
  4. Step 4: Simplify right side
    478.23x = 211,468.64
  5. Step 5: Solve for x
    x = 211,468.64/478.23
  6. Step 6: Final answer
    x = 442.19

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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.