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Finding the Fourth Proportional to 210.66, 291.88 and 207.01

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Solution

The fourth proportional to 210.66, 291.88 and 207.01 is: 286.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.66 : 291.88 = 207.01 : x
  2. Step 2: Convert to fraction form
    210.66/291.88 = 207.01/x
  3. Step 3: Cross multiply
    210.66x = 291.88 × 207.01
  4. Step 4: Simplify right side
    210.66x = 60,422.08
  5. Step 5: Solve for x
    x = 60,422.08/210.66
  6. Step 6: Final answer
    x = 286.82

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.