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Finding the Fourth Proportional to 340.33, 510.81 and 253.47

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Solution

The fourth proportional to 340.33, 510.81 and 253.47 is: 380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.33 : 510.81 = 253.47 : x
  2. Step 2: Convert to fraction form
    340.33/510.81 = 253.47/x
  3. Step 3: Cross multiply
    340.33x = 510.81 × 253.47
  4. Step 4: Simplify right side
    340.33x = 129,475.01
  5. Step 5: Solve for x
    x = 129,475.01/340.33
  6. Step 6: Final answer
    x = 380.44

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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.