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Finding the Fourth Proportional to 515.52, 710.59 and 349.67

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Solution

The fourth proportional to 515.52, 710.59 and 349.67 is: 481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.52 : 710.59 = 349.67 : x
  2. Step 2: Convert to fraction form
    515.52/710.59 = 349.67/x
  3. Step 3: Cross multiply
    515.52x = 710.59 × 349.67
  4. Step 4: Simplify right side
    515.52x = 248,472.01
  5. Step 5: Solve for x
    x = 248,472.01/515.52
  6. Step 6: Final answer
    x = 481.98

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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.