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Finding the Fourth Proportional to 951.97, 1,313.77 and 578.89

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Solution

The fourth proportional to 951.97, 1,313.77 and 578.89 is: 798.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.97 : 1,313.77 = 578.89 : x
  2. Step 2: Convert to fraction form
    951.97/1,313.77 = 578.89/x
  3. Step 3: Cross multiply
    951.97x = 1,313.77 × 578.89
  4. Step 4: Simplify right side
    951.97x = 760,528.32
  5. Step 5: Solve for x
    x = 760,528.32/951.97
  6. Step 6: Final answer
    x = 798.90

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1.5x scale

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.