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Finding the Fourth Proportional to 340.64, 510.54 and 247.94

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Solution

The fourth proportional to 340.64, 510.54 and 247.94 is: 371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.64 : 510.54 = 247.94 : x
  2. Step 2: Convert to fraction form
    340.64/510.54 = 247.94/x
  3. Step 3: Cross multiply
    340.64x = 510.54 × 247.94
  4. Step 4: Simplify right side
    340.64x = 126,583.29
  5. Step 5: Solve for x
    x = 126,583.29/340.64
  6. Step 6: Final answer
    x = 371.60

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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.