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Finding the Fourth Proportional to 951.59, 1,313.60 and 578.69

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Solution

The fourth proportional to 951.59, 1,313.60 and 578.69 is: 798.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.59 : 1,313.60 = 578.69 : x
  2. Step 2: Convert to fraction form
    951.59/1,313.60 = 578.69/x
  3. Step 3: Cross multiply
    951.59x = 1,313.60 × 578.69
  4. Step 4: Simplify right side
    951.59x = 760,167.18
  5. Step 5: Solve for x
    x = 760,167.18/951.59
  6. Step 6: Final answer
    x = 798.84

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Double scale
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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.