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Finding the Fourth Proportional to 667.06, 918.63 and 652.75

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Solution

The fourth proportional to 667.06, 918.63 and 652.75 is: 898.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.06 : 918.63 = 652.75 : x
  2. Step 2: Convert to fraction form
    667.06/918.63 = 652.75/x
  3. Step 3: Cross multiply
    667.06x = 918.63 × 652.75
  4. Step 4: Simplify right side
    667.06x = 599,635.73
  5. Step 5: Solve for x
    x = 599,635.73/667.06
  6. Step 6: Final answer
    x = 898.92

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1.5x scale

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.