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Finding the Fourth Proportional to 500.05, 750.62 and 256.51

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Solution

The fourth proportional to 500.05, 750.62 and 256.51 is: 385.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.05 : 750.62 = 256.51 : x
  2. Step 2: Convert to fraction form
    500.05/750.62 = 256.51/x
  3. Step 3: Cross multiply
    500.05x = 750.62 × 256.51
  4. Step 4: Simplify right side
    500.05x = 192,541.54
  5. Step 5: Solve for x
    x = 192,541.54/500.05
  6. Step 6: Final answer
    x = 385.04

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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.