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Finding the Fourth Proportional to 815.16, 1,124.91 and 593.76

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Solution

The fourth proportional to 815.16, 1,124.91 and 593.76 is: 819.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    815.16 : 1,124.91 = 593.76 : x
  2. Step 2: Convert to fraction form
    815.16/1,124.91 = 593.76/x
  3. Step 3: Cross multiply
    815.16x = 1,124.91 × 593.76
  4. Step 4: Simplify right side
    815.16x = 667,926.56
  5. Step 5: Solve for x
    x = 667,926.56/815.16
  6. Step 6: Final answer
    x = 819.38

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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.