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Finding the Fourth Proportional to 354.37, 530.98 and 316.54

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Solution

The fourth proportional to 354.37, 530.98 and 316.54 is: 474.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.37 : 530.98 = 316.54 : x
  2. Step 2: Convert to fraction form
    354.37/530.98 = 316.54/x
  3. Step 3: Cross multiply
    354.37x = 530.98 × 316.54
  4. Step 4: Simplify right side
    354.37x = 168,076.41
  5. Step 5: Solve for x
    x = 168,076.41/354.37
  6. Step 6: Final answer
    x = 474.30

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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.