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Finding the Fourth Proportional to 340.80, 510.66 and 263.95

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Solution

The fourth proportional to 340.80, 510.66 and 263.95 is: 395.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.80 : 510.66 = 263.95 : x
  2. Step 2: Convert to fraction form
    340.80/510.66 = 263.95/x
  3. Step 3: Cross multiply
    340.80x = 510.66 × 263.95
  4. Step 4: Simplify right side
    340.80x = 134,788.71
  5. Step 5: Solve for x
    x = 134,788.71/340.80
  6. Step 6: Final answer
    x = 395.51

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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.