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Finding the Fourth Proportional to 555.54, 764.20 and 533.06

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Solution

The fourth proportional to 555.54, 764.20 and 533.06 is: 733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.54 : 764.20 = 533.06 : x
  2. Step 2: Convert to fraction form
    555.54/764.20 = 533.06/x
  3. Step 3: Cross multiply
    555.54x = 764.20 × 533.06
  4. Step 4: Simplify right side
    555.54x = 407,368.46
  5. Step 5: Solve for x
    x = 407,368.46/555.54
  6. Step 6: Final answer
    x = 733.28

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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.