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Finding the Fourth Proportional to 340.88, 510.39 and 268.58

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Solution

The fourth proportional to 340.88, 510.39 and 268.58 is: 402.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.88 : 510.39 = 268.58 : x
  2. Step 2: Convert to fraction form
    340.88/510.39 = 268.58/x
  3. Step 3: Cross multiply
    340.88x = 510.39 × 268.58
  4. Step 4: Simplify right side
    340.88x = 137,080.55
  5. Step 5: Solve for x
    x = 137,080.55/340.88
  6. Step 6: Final answer
    x = 402.14

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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.