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Finding the Fourth Proportional to 479.78, 660.93 and 332.16

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Solution

The fourth proportional to 479.78, 660.93 and 332.16 is: 457.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.78 : 660.93 = 332.16 : x
  2. Step 2: Convert to fraction form
    479.78/660.93 = 332.16/x
  3. Step 3: Cross multiply
    479.78x = 660.93 × 332.16
  4. Step 4: Simplify right side
    479.78x = 219,534.51
  5. Step 5: Solve for x
    x = 219,534.51/479.78
  6. Step 6: Final answer
    x = 457.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.