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Finding the Fourth Proportional to 517.06, 713.48 and 307.26

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Solution

The fourth proportional to 517.06, 713.48 and 307.26 is: 423.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.06 : 713.48 = 307.26 : x
  2. Step 2: Convert to fraction form
    517.06/713.48 = 307.26/x
  3. Step 3: Cross multiply
    517.06x = 713.48 × 307.26
  4. Step 4: Simplify right side
    517.06x = 219,223.86
  5. Step 5: Solve for x
    x = 219,223.86/517.06
  6. Step 6: Final answer
    x = 423.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.