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Finding the Fourth Proportional to 673.92, 929.16 and 549.45

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Solution

The fourth proportional to 673.92, 929.16 and 549.45 is: 757.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.92 : 929.16 = 549.45 : x
  2. Step 2: Convert to fraction form
    673.92/929.16 = 549.45/x
  3. Step 3: Cross multiply
    673.92x = 929.16 × 549.45
  4. Step 4: Simplify right side
    673.92x = 510,526.96
  5. Step 5: Solve for x
    x = 510,526.96/673.92
  6. Step 6: Final answer
    x = 757.55

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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.