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Finding the Fourth Proportional to 340.02, 509.90 and 157.37

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Solution

The fourth proportional to 340.02, 509.90 and 157.37 is: 235.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.02 : 509.90 = 157.37 : x
  2. Step 2: Convert to fraction form
    340.02/509.90 = 157.37/x
  3. Step 3: Cross multiply
    340.02x = 509.90 × 157.37
  4. Step 4: Simplify right side
    340.02x = 80,239.63
  5. Step 5: Solve for x
    x = 80,239.63/340.02
  6. Step 6: Final answer
    x = 235.99

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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.