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Finding the Fourth Proportional to 216.60, 322.59 and 214.08

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Solution

The fourth proportional to 216.60, 322.59 and 214.08 is: 318.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.60 : 322.59 = 214.08 : x
  2. Step 2: Convert to fraction form
    216.60/322.59 = 214.08/x
  3. Step 3: Cross multiply
    216.60x = 322.59 × 214.08
  4. Step 4: Simplify right side
    216.60x = 69,060.07
  5. Step 5: Solve for x
    x = 69,060.07/216.60
  6. Step 6: Final answer
    x = 318.84

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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.