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Finding the Fourth Proportional to 556.60, 768.07 and 304.51

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Solution

The fourth proportional to 556.60, 768.07 and 304.51 is: 420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.60 : 768.07 = 304.51 : x
  2. Step 2: Convert to fraction form
    556.60/768.07 = 304.51/x
  3. Step 3: Cross multiply
    556.60x = 768.07 × 304.51
  4. Step 4: Simplify right side
    556.60x = 233,885.00
  5. Step 5: Solve for x
    x = 233,885.00/556.60
  6. Step 6: Final answer
    x = 420.20

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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.