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Finding the Fourth Proportional to 556.62, 768.45 and 495.10

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Solution

The fourth proportional to 556.62, 768.45 and 495.10 is: 683.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.62 : 768.45 = 495.10 : x
  2. Step 2: Convert to fraction form
    556.62/768.45 = 495.10/x
  3. Step 3: Cross multiply
    556.62x = 768.45 × 495.10
  4. Step 4: Simplify right side
    556.62x = 380,459.60
  5. Step 5: Solve for x
    x = 380,459.60/556.62
  6. Step 6: Final answer
    x = 683.52

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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.