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Finding the Fourth Proportional to 549.86, 758.30 and 495.18

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Solution

The fourth proportional to 549.86, 758.30 and 495.18 is: 682.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.86 : 758.30 = 495.18 : x
  2. Step 2: Convert to fraction form
    549.86/758.30 = 495.18/x
  3. Step 3: Cross multiply
    549.86x = 758.30 × 495.18
  4. Step 4: Simplify right side
    549.86x = 375,492.52
  5. Step 5: Solve for x
    x = 375,492.52/549.86
  6. Step 6: Final answer
    x = 682.89

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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.