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Finding the Fourth Proportional to 355.87, 530.94 and 316.88

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Solution

The fourth proportional to 355.87, 530.94 and 316.88 is: 472.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.87 : 530.94 = 316.88 : x
  2. Step 2: Convert to fraction form
    355.87/530.94 = 316.88/x
  3. Step 3: Cross multiply
    355.87x = 530.94 × 316.88
  4. Step 4: Simplify right side
    355.87x = 168,244.27
  5. Step 5: Solve for x
    x = 168,244.27/355.87
  6. Step 6: Final answer
    x = 472.77

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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.