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Finding the Fourth Proportional to 340.73, 510.89 and 253.25

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Solution

The fourth proportional to 340.73, 510.89 and 253.25 is: 379.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.73 : 510.89 = 253.25 : x
  2. Step 2: Convert to fraction form
    340.73/510.89 = 253.25/x
  3. Step 3: Cross multiply
    340.73x = 510.89 × 253.25
  4. Step 4: Simplify right side
    340.73x = 129,379.07
  5. Step 5: Solve for x
    x = 129,379.07/340.73
  6. Step 6: Final answer
    x = 379.72

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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.