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Finding the Fourth Proportional to 572.91, 790.79 and 365.91

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Solution

The fourth proportional to 572.91, 790.79 and 365.91 is: 505.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.91 : 790.79 = 365.91 : x
  2. Step 2: Convert to fraction form
    572.91/790.79 = 365.91/x
  3. Step 3: Cross multiply
    572.91x = 790.79 × 365.91
  4. Step 4: Simplify right side
    572.91x = 289,355.23
  5. Step 5: Solve for x
    x = 289,355.23/572.91
  6. Step 6: Final answer
    x = 505.07

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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.