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Finding the Fourth Proportional to 673.76, 928.50 and 549.74

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Solution

The fourth proportional to 673.76, 928.50 and 549.74 is: 757.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.76 : 928.50 = 549.74 : x
  2. Step 2: Convert to fraction form
    673.76/928.50 = 549.74/x
  3. Step 3: Cross multiply
    673.76x = 928.50 × 549.74
  4. Step 4: Simplify right side
    673.76x = 510,433.59
  5. Step 5: Solve for x
    x = 510,433.59/673.76
  6. Step 6: Final answer
    x = 757.59

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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.