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Finding the Fourth Proportional to 640.04, 959.50 and 503.68

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Solution

The fourth proportional to 640.04, 959.50 and 503.68 is: 755.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.04 : 959.50 = 503.68 : x
  2. Step 2: Convert to fraction form
    640.04/959.50 = 503.68/x
  3. Step 3: Cross multiply
    640.04x = 959.50 × 503.68
  4. Step 4: Simplify right side
    640.04x = 483,280.96
  5. Step 5: Solve for x
    x = 483,280.96/640.04
  6. Step 6: Final answer
    x = 755.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.