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Finding the Fourth Proportional to 462.24, 691.16 and 313.56

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Solution

The fourth proportional to 462.24, 691.16 and 313.56 is: 468.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.24 : 691.16 = 313.56 : x
  2. Step 2: Convert to fraction form
    462.24/691.16 = 313.56/x
  3. Step 3: Cross multiply
    462.24x = 691.16 × 313.56
  4. Step 4: Simplify right side
    462.24x = 216,720.13
  5. Step 5: Solve for x
    x = 216,720.13/462.24
  6. Step 6: Final answer
    x = 468.85

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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.