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Finding the Fourth Proportional to 210.84, 314.68 and 185.16

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Solution

The fourth proportional to 210.84, 314.68 and 185.16 is: 276.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.84 : 314.68 = 185.16 : x
  2. Step 2: Convert to fraction form
    210.84/314.68 = 185.16/x
  3. Step 3: Cross multiply
    210.84x = 314.68 × 185.16
  4. Step 4: Simplify right side
    210.84x = 58,266.15
  5. Step 5: Solve for x
    x = 58,266.15/210.84
  6. Step 6: Final answer
    x = 276.35

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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.