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Finding the Fourth Proportional to 556.08, 763.28 and 492.52

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Solution

The fourth proportional to 556.08, 763.28 and 492.52 is: 676.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.08 : 763.28 = 492.52 : x
  2. Step 2: Convert to fraction form
    556.08/763.28 = 492.52/x
  3. Step 3: Cross multiply
    556.08x = 763.28 × 492.52
  4. Step 4: Simplify right side
    556.08x = 375,930.67
  5. Step 5: Solve for x
    x = 375,930.67/556.08
  6. Step 6: Final answer
    x = 676.04

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.