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Finding the Fourth Proportional to 210.30, 315.58 and 114.18

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Solution

The fourth proportional to 210.30, 315.58 and 114.18 is: 171.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.30 : 315.58 = 114.18 : x
  2. Step 2: Convert to fraction form
    210.30/315.58 = 114.18/x
  3. Step 3: Cross multiply
    210.30x = 315.58 × 114.18
  4. Step 4: Simplify right side
    210.30x = 36,032.92
  5. Step 5: Solve for x
    x = 36,032.92/210.30
  6. Step 6: Final answer
    x = 171.34

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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.