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Finding the Fourth Proportional to 888.96, 1,227.36 and 692.16

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Solution

The fourth proportional to 888.96, 1,227.36 and 692.16 is: 955.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.96 : 1,227.36 = 692.16 : x
  2. Step 2: Convert to fraction form
    888.96/1,227.36 = 692.16/x
  3. Step 3: Cross multiply
    888.96x = 1,227.36 × 692.16
  4. Step 4: Simplify right side
    888.96x = 849,529.50
  5. Step 5: Solve for x
    x = 849,529.50/888.96
  6. Step 6: Final answer
    x = 955.64

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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.