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Finding the Fourth Proportional to 479.79, 714.75 and 462.36

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Solution

The fourth proportional to 479.79, 714.75 and 462.36 is: 688.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.79 : 714.75 = 462.36 : x
  2. Step 2: Convert to fraction form
    479.79/714.75 = 462.36/x
  3. Step 3: Cross multiply
    479.79x = 714.75 × 462.36
  4. Step 4: Simplify right side
    479.79x = 330,471.81
  5. Step 5: Solve for x
    x = 330,471.81/479.79
  6. Step 6: Final answer
    x = 688.78

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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.