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Finding the Fourth Proportional to 696.87, 962.49 and 555.55

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Solution

The fourth proportional to 696.87, 962.49 and 555.55 is: 767.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.87 : 962.49 = 555.55 : x
  2. Step 2: Convert to fraction form
    696.87/962.49 = 555.55/x
  3. Step 3: Cross multiply
    696.87x = 962.49 × 555.55
  4. Step 4: Simplify right side
    696.87x = 534,712.14
  5. Step 5: Solve for x
    x = 534,712.14/696.87
  6. Step 6: Final answer
    x = 767.31

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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.