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Finding the Fourth Proportional to 654.46, 903.08 and 549.16

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Solution

The fourth proportional to 654.46, 903.08 and 549.16 is: 757.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.46 : 903.08 = 549.16 : x
  2. Step 2: Convert to fraction form
    654.46/903.08 = 549.16/x
  3. Step 3: Cross multiply
    654.46x = 903.08 × 549.16
  4. Step 4: Simplify right side
    654.46x = 495,935.41
  5. Step 5: Solve for x
    x = 495,935.41/654.46
  6. Step 6: Final answer
    x = 757.78

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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.