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Finding the Fourth Proportional to 590.93, 815.46 and 342.21

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Solution

The fourth proportional to 590.93, 815.46 and 342.21 is: 472.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.93 : 815.46 = 342.21 : x
  2. Step 2: Convert to fraction form
    590.93/815.46 = 342.21/x
  3. Step 3: Cross multiply
    590.93x = 815.46 × 342.21
  4. Step 4: Simplify right side
    590.93x = 279,058.57
  5. Step 5: Solve for x
    x = 279,058.57/590.93
  6. Step 6: Final answer
    x = 472.24

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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.