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Finding the Fourth Proportional to 647.00, 892.04 and 528.84

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Solution

The fourth proportional to 647.00, 892.04 and 528.84 is: 729.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.00 : 892.04 = 528.84 : x
  2. Step 2: Convert to fraction form
    647.00/892.04 = 528.84/x
  3. Step 3: Cross multiply
    647.00x = 892.04 × 528.84
  4. Step 4: Simplify right side
    647.00x = 471,743.79
  5. Step 5: Solve for x
    x = 471,743.79/647.00
  6. Step 6: Final answer
    x = 729.13

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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.