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Finding the Fourth Proportional to 581.16, 801.19 and 394.36

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Solution

The fourth proportional to 581.16, 801.19 and 394.36 is: 543.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.16 : 801.19 = 394.36 : x
  2. Step 2: Convert to fraction form
    581.16/801.19 = 394.36/x
  3. Step 3: Cross multiply
    581.16x = 801.19 × 394.36
  4. Step 4: Simplify right side
    581.16x = 315,957.29
  5. Step 5: Solve for x
    x = 315,957.29/581.16
  6. Step 6: Final answer
    x = 543.67

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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.