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Finding the Fourth Proportional to 479.54, 716.95 and 407.22

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Solution

The fourth proportional to 479.54, 716.95 and 407.22 is: 608.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.54 : 716.95 = 407.22 : x
  2. Step 2: Convert to fraction form
    479.54/716.95 = 407.22/x
  3. Step 3: Cross multiply
    479.54x = 716.95 × 407.22
  4. Step 4: Simplify right side
    479.54x = 291,956.38
  5. Step 5: Solve for x
    x = 291,956.38/479.54
  6. Step 6: Final answer
    x = 608.83

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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.