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Finding the Fourth Proportional to 465.42, 692.64 and 448.14

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Solution

The fourth proportional to 465.42, 692.64 and 448.14 is: 666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.42 : 692.64 = 448.14 : x
  2. Step 2: Convert to fraction form
    465.42/692.64 = 448.14/x
  3. Step 3: Cross multiply
    465.42x = 692.64 × 448.14
  4. Step 4: Simplify right side
    465.42x = 310,399.69
  5. Step 5: Solve for x
    x = 310,399.69/465.42
  6. Step 6: Final answer
    x = 666.92

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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.