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Finding the Fourth Proportional to 340.15, 510.09 and 157.51

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Solution

The fourth proportional to 340.15, 510.09 and 157.51 is: 236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.15 : 510.09 = 157.51 : x
  2. Step 2: Convert to fraction form
    340.15/510.09 = 157.51/x
  3. Step 3: Cross multiply
    340.15x = 510.09 × 157.51
  4. Step 4: Simplify right side
    340.15x = 80,344.28
  5. Step 5: Solve for x
    x = 80,344.28/340.15
  6. Step 6: Final answer
    x = 236.20

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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.