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Finding the Fourth Proportional to 515.88, 770.02 and 472.58

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Solution

The fourth proportional to 515.88, 770.02 and 472.58 is: 705.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.88 : 770.02 = 472.58 : x
  2. Step 2: Convert to fraction form
    515.88/770.02 = 472.58/x
  3. Step 3: Cross multiply
    515.88x = 770.02 × 472.58
  4. Step 4: Simplify right side
    515.88x = 363,896.05
  5. Step 5: Solve for x
    x = 363,896.05/515.88
  6. Step 6: Final answer
    x = 705.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.