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Finding the Fourth Proportional to 640.60, 883.03 and 536.04

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Solution

The fourth proportional to 640.60, 883.03 and 536.04 is: 738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.60 : 883.03 = 536.04 : x
  2. Step 2: Convert to fraction form
    640.60/883.03 = 536.04/x
  3. Step 3: Cross multiply
    640.60x = 883.03 × 536.04
  4. Step 4: Simplify right side
    640.60x = 473,339.40
  5. Step 5: Solve for x
    x = 473,339.40/640.60
  6. Step 6: Final answer
    x = 738.90

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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.