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Finding the Fourth Proportional to 667.19, 918.86 and 652.84

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Solution

The fourth proportional to 667.19, 918.86 and 652.84 is: 899.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.19 : 918.86 = 652.84 : x
  2. Step 2: Convert to fraction form
    667.19/918.86 = 652.84/x
  3. Step 3: Cross multiply
    667.19x = 918.86 × 652.84
  4. Step 4: Simplify right side
    667.19x = 599,863.00
  5. Step 5: Solve for x
    x = 599,863.00/667.19
  6. Step 6: Final answer
    x = 899.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.