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Finding the Fourth Proportional to 340.65, 510.30 and 203.31

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Solution

The fourth proportional to 340.65, 510.30 and 203.31 is: 304.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.65 : 510.30 = 203.31 : x
  2. Step 2: Convert to fraction form
    340.65/510.30 = 203.31/x
  3. Step 3: Cross multiply
    340.65x = 510.30 × 203.31
  4. Step 4: Simplify right side
    340.65x = 103,749.09
  5. Step 5: Solve for x
    x = 103,749.09/340.65
  6. Step 6: Final answer
    x = 304.56

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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.