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Finding the Fourth Proportional to 355.56, 533.36 and 99.06

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Solution

The fourth proportional to 355.56, 533.36 and 99.06 is: 148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.56 : 533.36 = 99.06 : x
  2. Step 2: Convert to fraction form
    355.56/533.36 = 99.06/x
  3. Step 3: Cross multiply
    355.56x = 533.36 × 99.06
  4. Step 4: Simplify right side
    355.56x = 52,834.64
  5. Step 5: Solve for x
    x = 52,834.64/355.56
  6. Step 6: Final answer
    x = 148.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.