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Finding the Fourth Proportional to 648.50, 895.57 and 554.71

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Solution

The fourth proportional to 648.50, 895.57 and 554.71 is: 766.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.50 : 895.57 = 554.71 : x
  2. Step 2: Convert to fraction form
    648.50/895.57 = 554.71/x
  3. Step 3: Cross multiply
    648.50x = 895.57 × 554.71
  4. Step 4: Simplify right side
    648.50x = 496,778.01
  5. Step 5: Solve for x
    x = 496,778.01/648.50
  6. Step 6: Final answer
    x = 766.04

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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.