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Finding the Fourth Proportional to 340.12, 510.35 and 134.64

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Solution

The fourth proportional to 340.12, 510.35 and 134.64 is: 202.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.12 : 510.35 = 134.64 : x
  2. Step 2: Convert to fraction form
    340.12/510.35 = 134.64/x
  3. Step 3: Cross multiply
    340.12x = 510.35 × 134.64
  4. Step 4: Simplify right side
    340.12x = 68,713.52
  5. Step 5: Solve for x
    x = 68,713.52/340.12
  6. Step 6: Final answer
    x = 202.03

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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.