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Finding the Fourth Proportional to 479.80, 716.63 and 383.32

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Solution

The fourth proportional to 479.80, 716.63 and 383.32 is: 572.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.80 : 716.63 = 383.32 : x
  2. Step 2: Convert to fraction form
    479.80/716.63 = 383.32/x
  3. Step 3: Cross multiply
    479.80x = 716.63 × 383.32
  4. Step 4: Simplify right side
    479.80x = 274,698.61
  5. Step 5: Solve for x
    x = 274,698.61/479.80
  6. Step 6: Final answer
    x = 572.53

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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.