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Finding the Fourth Proportional to 462.16, 694.86 and 318.52

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Solution

The fourth proportional to 462.16, 694.86 and 318.52 is: 478.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.16 : 694.86 = 318.52 : x
  2. Step 2: Convert to fraction form
    462.16/694.86 = 318.52/x
  3. Step 3: Cross multiply
    462.16x = 694.86 × 318.52
  4. Step 4: Simplify right side
    462.16x = 221,326.81
  5. Step 5: Solve for x
    x = 221,326.81/462.16
  6. Step 6: Final answer
    x = 478.90

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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.