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Finding the Fourth Proportional to 679.02, 936.84 and 384.27

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Solution

The fourth proportional to 679.02, 936.84 and 384.27 is: 530.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.02 : 936.84 = 384.27 : x
  2. Step 2: Convert to fraction form
    679.02/936.84 = 384.27/x
  3. Step 3: Cross multiply
    679.02x = 936.84 × 384.27
  4. Step 4: Simplify right side
    679.02x = 359,999.51
  5. Step 5: Solve for x
    x = 359,999.51/679.02
  6. Step 6: Final answer
    x = 530.18

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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.