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Finding the Fourth Proportional to 358.56, 533.66 and 356.54

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Solution

The fourth proportional to 358.56, 533.66 and 356.54 is: 530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.56 : 533.66 = 356.54 : x
  2. Step 2: Convert to fraction form
    358.56/533.66 = 356.54/x
  3. Step 3: Cross multiply
    358.56x = 533.66 × 356.54
  4. Step 4: Simplify right side
    358.56x = 190,266.69
  5. Step 5: Solve for x
    x = 190,266.69/358.56
  6. Step 6: Final answer
    x = 530.64

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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.