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Finding the Fourth Proportional to 313.24, 469.58 and 210.12

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Solution

The fourth proportional to 313.24, 469.58 and 210.12 is: 314.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.24 : 469.58 = 210.12 : x
  2. Step 2: Convert to fraction form
    313.24/469.58 = 210.12/x
  3. Step 3: Cross multiply
    313.24x = 469.58 × 210.12
  4. Step 4: Simplify right side
    313.24x = 98,668.15
  5. Step 5: Solve for x
    x = 98,668.15/313.24
  6. Step 6: Final answer
    x = 314.99

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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.