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Finding the Fourth Proportional to 556.59, 773.49 and 549.75

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Solution

The fourth proportional to 556.59, 773.49 and 549.75 is: 763.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.59 : 773.49 = 549.75 : x
  2. Step 2: Convert to fraction form
    556.59/773.49 = 549.75/x
  3. Step 3: Cross multiply
    556.59x = 773.49 × 549.75
  4. Step 4: Simplify right side
    556.59x = 425,226.13
  5. Step 5: Solve for x
    x = 425,226.13/556.59
  6. Step 6: Final answer
    x = 763.98

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.