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Finding the Fourth Proportional to 951.59, 1,313.25 and 578.51

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Solution

The fourth proportional to 951.59, 1,313.25 and 578.51 is: 798.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.59 : 1,313.25 = 578.51 : x
  2. Step 2: Convert to fraction form
    951.59/1,313.25 = 578.51/x
  3. Step 3: Cross multiply
    951.59x = 1,313.25 × 578.51
  4. Step 4: Simplify right side
    951.59x = 759,731.54
  5. Step 5: Solve for x
    x = 759,731.54/951.59
  6. Step 6: Final answer
    x = 798.38

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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.