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Finding the Fourth Proportional to 651.00, 898.19 and 388.96

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Solution

The fourth proportional to 651.00, 898.19 and 388.96 is: 536.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.00 : 898.19 = 388.96 : x
  2. Step 2: Convert to fraction form
    651.00/898.19 = 388.96/x
  3. Step 3: Cross multiply
    651.00x = 898.19 × 388.96
  4. Step 4: Simplify right side
    651.00x = 349,358.04
  5. Step 5: Solve for x
    x = 349,358.04/651.00
  6. Step 6: Final answer
    x = 536.65

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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.