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Finding the Fourth Proportional to 340.24, 510.42 and 307.57

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Solution

The fourth proportional to 340.24, 510.42 and 307.57 is: 461.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.24 : 510.42 = 307.57 : x
  2. Step 2: Convert to fraction form
    340.24/510.42 = 307.57/x
  3. Step 3: Cross multiply
    340.24x = 510.42 × 307.57
  4. Step 4: Simplify right side
    340.24x = 156,989.88
  5. Step 5: Solve for x
    x = 156,989.88/340.24
  6. Step 6: Final answer
    x = 461.41

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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.