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Finding the Fourth Proportional to 340.41, 510.64 and 121.08

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Solution

The fourth proportional to 340.41, 510.64 and 121.08 is: 181.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.41 : 510.64 = 121.08 : x
  2. Step 2: Convert to fraction form
    340.41/510.64 = 121.08/x
  3. Step 3: Cross multiply
    340.41x = 510.64 × 121.08
  4. Step 4: Simplify right side
    340.41x = 61,829.70
  5. Step 5: Solve for x
    x = 61,829.70/340.41
  6. Step 6: Final answer
    x = 181.63

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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.