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Finding the Fourth Proportional to 572.82, 790.34 and 376.40

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Solution

The fourth proportional to 572.82, 790.34 and 376.40 is: 519.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.82 : 790.34 = 376.40 : x
  2. Step 2: Convert to fraction form
    572.82/790.34 = 376.40/x
  3. Step 3: Cross multiply
    572.82x = 790.34 × 376.40
  4. Step 4: Simplify right side
    572.82x = 297,478.14
  5. Step 5: Solve for x
    x = 297,478.14/572.82
  6. Step 6: Final answer
    x = 519.32

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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.