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Finding the Fourth Proportional to 585.40, 876.36 and 379.36

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Solution

The fourth proportional to 585.40, 876.36 and 379.36 is: 567.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.40 : 876.36 = 379.36 : x
  2. Step 2: Convert to fraction form
    585.40/876.36 = 379.36/x
  3. Step 3: Cross multiply
    585.40x = 876.36 × 379.36
  4. Step 4: Simplify right side
    585.40x = 332,455.93
  5. Step 5: Solve for x
    x = 332,455.93/585.40
  6. Step 6: Final answer
    x = 567.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.